My Mail server is separate from my application servers. All of the servers are running on Public IPs.
The applications from where I am trying to send email:
- A .NET code API that will send emails to user during registration. This is running both locally and on a domain and both are not able to send emails.
- A selfhosted Nextcloud App that is running on the same server as my company website. However, mailserver is on a different server. Nextcloud is not able to send emails either.
My Firewalls are turned off. Mailcow installation is taking care of Let’s encrypt certificates.
Logs of PostFix:
May 5 10:26:50 bc9524eb1023 postfix/smtps/smtpd[30531]: lost connection after AUTH from unknown[46.148.40.155]
May 5 10:26:50 bc9524eb1023 postfix/smtps/smtpd[30531]: disconnect from unknown[46.148.40.155] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:28:45 bc9524eb1023 postfix/smtps/smtpd[30544]: connect from unknown[46.148.40.161]
May 5 10:28:45 bc9524eb1023 postfix/smtps/smtpd[30544]: Anonymous TLS connection established from unknown[46.148.40.161]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:28:55 bc9524eb1023 postfix/smtps/smtpd[30544]: warning: unknown[46.148.40.161]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:28:56 bc9524eb1023 postfix/smtps/smtpd[30544]: lost connection after AUTH from unknown[46.148.40.161]
May 5 10:28:56 bc9524eb1023 postfix/smtps/smtpd[30544]: disconnect from unknown[46.148.40.161] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:30:06 bc9524eb1023 postfix/smtps/smtpd[30534]: timeout after AUTH from unknown[46.148.40.162]
May 5 10:30:06 bc9524eb1023 postfix/smtps/smtpd[30534]: disconnect from unknown[46.148.40.162] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:30:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection rate 1/60s for (smtps:46.148.40.157) at May 5 10:21:26
May 5 10:30:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection count 1 for (smtps:46.148.40.157) at May 5 10:21:26
May 5 10:30:28 bc9524eb1023 postfix/anvil[24516]: statistics: max cache size 3 at May 5 10:22:25
May 5 10:30:30 bc9524eb1023 postfix/smtps/smtpd[30544]: connect from unknown[46.148.40.157]
May 5 10:30:32 bc9524eb1023 postfix/smtps/smtpd[30544]: Anonymous TLS connection established from unknown[46.148.40.157]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:30:42 bc9524eb1023 postfix/smtps/smtpd[30544]: warning: unknown[46.148.40.157]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:30:42 bc9524eb1023 postfix/smtps/smtpd[30544]: lost connection after AUTH from unknown[46.148.40.157]
May 5 10:30:42 bc9524eb1023 postfix/smtps/smtpd[30544]: disconnect from unknown[46.148.40.157] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:31:29 bc9524eb1023 postfix/smtps/smtpd[30534]: connect from unknown[46.148.40.154]
May 5 10:31:29 bc9524eb1023 postfix/smtps/smtpd[30544]: connect from unknown[46.148.40.159]
May 5 10:31:30 bc9524eb1023 postfix/smtps/smtpd[30544]: Anonymous TLS connection established from unknown[46.148.40.159]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:31:30 bc9524eb1023 postfix/smtps/smtpd[30534]: Anonymous TLS connection established from unknown[46.148.40.154]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:31:38 bc9524eb1023 postfix/smtps/smtpd[30544]: warning: unknown[46.148.40.159]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:31:44 bc9524eb1023 postfix/smtps/smtpd[30534]: warning: unknown[46.148.40.154]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:31:47 bc9524eb1023 postfix/smtps/smtpd[30534]: lost connection after AUTH from unknown[46.148.40.154]
May 5 10:31:47 bc9524eb1023 postfix/smtps/smtpd[30534]: disconnect from unknown[46.148.40.154] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:33:29 bc9524eb1023 postfix/smtps/smtpd[30559]: connect from unknown[46.148.40.163]
May 5 10:33:29 bc9524eb1023 postfix/smtps/smtpd[30559]: Anonymous TLS connection established from unknown[46.148.40.163]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:33:35 bc9524eb1023 postfix/smtps/smtpd[30559]: warning: unknown[46.148.40.163]: SASL LOGIN authentication failed: VXNlcm5hbWU6
May 5 10:33:37 bc9524eb1023 postfix/smtps/smtpd[30559]: lost connection after UNKNOWN from unknown[46.148.40.163]
May 5 10:33:37 bc9524eb1023 postfix/smtps/smtpd[30559]: disconnect from unknown[46.148.40.163] ehlo=1 auth=0/1 rset=1 unknown=0/1 commands=2/4
May 5 10:34:24 bc9524eb1023 postfix/smtps/smtpd[30559]: connect from unknown[46.148.40.150]
May 5 10:34:25 bc9524eb1023 postfix/smtps/smtpd[30559]: Anonymous TLS connection established from unknown[46.148.40.150]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:34:33 bc9524eb1023 postfix/smtps/smtpd[30559]: warning: unknown[46.148.40.150]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:34:35 bc9524eb1023 postfix/smtps/smtpd[30559]: lost connection after AUTH from unknown[46.148.40.150]
May 5 10:34:35 bc9524eb1023 postfix/smtps/smtpd[30559]: disconnect from unknown[46.148.40.150] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:35:01 bc9524eb1023 postfix/smtps/smtpd[30559]: connect from unknown[46.148.40.155]
May 5 10:35:03 bc9524eb1023 postfix/smtps/smtpd[30559]: Anonymous TLS connection established from unknown[46.148.40.155]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:35:15 bc9524eb1023 postfix/smtps/smtpd[30559]: warning: unknown[46.148.40.155]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:35:17 bc9524eb1023 postfix/smtps/smtpd[30559]: lost connection after AUTH from unknown[46.148.40.155]
May 5 10:35:17 bc9524eb1023 postfix/smtps/smtpd[30559]: disconnect from unknown[46.148.40.155] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:36:38 bc9524eb1023 postfix/smtps/smtpd[30544]: timeout after AUTH from unknown[46.148.40.159]
May 5 10:36:38 bc9524eb1023 postfix/smtps/smtpd[30544]: disconnect from unknown[46.148.40.159] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:37:46 bc9524eb1023 postfix/smtps/smtpd[30544]: connect from unknown[46.148.40.161]
May 5 10:37:47 bc9524eb1023 postfix/smtps/smtpd[30544]: Anonymous TLS connection established from unknown[46.148.40.161]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:38:02 bc9524eb1023 postfix/smtps/smtpd[30544]: warning: unknown[46.148.40.161]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:39:12 bc9524eb1023 postfix/smtps/smtpd[30582]: connect from unknown[46.148.40.157]
May 5 10:39:13 bc9524eb1023 postfix/smtps/smtpd[30582]: Anonymous TLS connection established from unknown[46.148.40.157]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:39:23 bc9524eb1023 postfix/smtps/smtpd[30582]: warning: unknown[46.148.40.157]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:39:23 bc9524eb1023 postfix/smtps/smtpd[30582]: lost connection after AUTH from unknown[46.148.40.157]
May 5 10:39:23 bc9524eb1023 postfix/smtps/smtpd[30582]: disconnect from unknown[46.148.40.157] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:40:20 bc9524eb1023 postfix/smtps/smtpd[30582]: connect from unknown[46.148.40.154]
May 5 10:40:21 bc9524eb1023 postfix/smtps/smtpd[30582]: Anonymous TLS connection established from unknown[46.148.40.154]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:40:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection rate 1/60s for (smtps:46.148.40.157) at May 5 10:30:32
May 5 10:40:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection count 1 for (smtps:46.148.40.157) at May 5 10:30:32
May 5 10:40:28 bc9524eb1023 postfix/anvil[24516]: statistics: max cache size 3 at May 5 10:31:30
May 5 10:40:31 bc9524eb1023 postfix/smtps/smtpd[30582]: warning: unknown[46.148.40.154]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:42:12 bc9524eb1023 postfix/smtps/smtpd[30590]: connect from unknown[46.148.40.163]
May 5 10:42:14 bc9524eb1023 postfix/smtps/smtpd[30590]: Anonymous TLS connection established from unknown[46.148.40.163]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:42:22 bc9524eb1023 postfix/smtps/smtpd[30590]: warning: unknown[46.148.40.163]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:43:02 bc9524eb1023 postfix/smtps/smtpd[30544]: timeout after AUTH from unknown[46.148.40.161]
May 5 10:43:02 bc9524eb1023 postfix/smtps/smtpd[30544]: disconnect from unknown[46.148.40.161] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:43:06 bc9524eb1023 postfix/smtps/smtpd[30544]: connect from unknown[46.148.40.150]
May 5 10:43:08 bc9524eb1023 postfix/smtps/smtpd[30544]: Anonymous TLS connection established from unknown[46.148.40.150]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:43:19 bc9524eb1023 postfix/smtps/smtpd[30544]: warning: unknown[46.148.40.150]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:43:21 bc9524eb1023 postfix/smtps/smtpd[30544]: lost connection after AUTH from unknown[46.148.40.150]
May 5 10:43:21 bc9524eb1023 postfix/smtps/smtpd[30544]: disconnect from unknown[46.148.40.150] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:43:50 bc9524eb1023 postfix/smtps/smtpd[30544]: connect from unknown[46.148.40.155]
May 5 10:43:52 bc9524eb1023 postfix/smtps/smtpd[30544]: Anonymous TLS connection established from unknown[46.148.40.155]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:44:04 bc9524eb1023 postfix/smtps/smtpd[30544]: warning: unknown[46.148.40.155]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:44:07 bc9524eb1023 postfix/smtps/smtpd[30544]: lost connection after AUTH from unknown[46.148.40.155]
May 5 10:44:07 bc9524eb1023 postfix/smtps/smtpd[30544]: disconnect from unknown[46.148.40.155] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:45:31 bc9524eb1023 postfix/smtps/smtpd[30582]: timeout after AUTH from unknown[46.148.40.154]
May 5 10:45:31 bc9524eb1023 postfix/smtps/smtpd[30582]: disconnect from unknown[46.148.40.154] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:47:22 bc9524eb1023 postfix/smtps/smtpd[30590]: timeout after AUTH from unknown[46.148.40.163]
May 5 10:47:22 bc9524eb1023 postfix/smtps/smtpd[30590]: disconnect from unknown[46.148.40.163] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:47:52 bc9524eb1023 postfix/smtps/smtpd[30590]: connect from unknown[46.148.40.157]
May 5 10:47:53 bc9524eb1023 postfix/smtps/smtpd[30590]: Anonymous TLS connection established from unknown[46.148.40.157]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:48:01 bc9524eb1023 postfix/smtps/smtpd[30590]: warning: unknown[46.148.40.157]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:50:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection rate 1/60s for (smtps:46.148.40.163) at May 5 10:42:14
May 5 10:50:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection count 1 for (smtps:46.148.40.163) at May 5 10:42:14
May 5 10:50:28 bc9524eb1023 postfix/anvil[24516]: statistics: max cache size 5 at May 5 10:43:52
May 5 10:51:40 bc9524eb1023 postfix/postscreen[30622]: CONNECT from [85.208.136.245]:61328 to [172.22.1.253]:25
May 5 10:51:40 bc9524eb1023 whitelist_forwardinghosts: Look up 85.208.136.245 on whitelist, result 200 DUNNO
May 5 10:51:40 bc9524eb1023 postfix/postscreen[30622]: PREGREET 11 after 0.01 from [85.208.136.245]:61328: EHLO User\r\n
May 5 10:51:40 bc9524eb1023 postfix/dnsblog[30633]: addr 85.208.136.245 listed by domain bl.mailspike.net as 127.0.0.2
May 5 10:51:43 bc9524eb1023 postfix/postscreen[30622]: DISCONNECT [85.208.136.245]:61328
May 5 10:51:47 bc9524eb1023 postfix/smtps/smtpd[30643]: connect from unknown[46.148.40.150]
May 5 10:51:47 bc9524eb1023 postfix/smtps/smtpd[30643]: Anonymous TLS connection established from unknown[46.148.40.150]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:51:47 bc9524eb1023 postfix/dnsblog[30636]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.9
May 5 10:51:47 bc9524eb1023 postfix/dnsblog[30636]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.11
May 5 10:51:47 bc9524eb1023 postfix/dnsblog[30636]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.4
May 5 10:51:47 bc9524eb1023 postfix/dnsblog[30636]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.2
May 5 10:51:56 bc9524eb1023 postfix/smtps/smtpd[30643]: warning: unknown[46.148.40.150]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:53:01 bc9524eb1023 postfix/smtps/smtpd[30590]: timeout after AUTH from unknown[46.148.40.157]
May 5 10:53:01 bc9524eb1023 postfix/smtps/smtpd[30590]: disconnect from unknown[46.148.40.157] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:53:06 bc9524eb1023 postfix/smtps/smtpd[30590]: connect from unknown[46.148.40.155]
May 5 10:53:07 bc9524eb1023 postfix/smtps/smtpd[30590]: Anonymous TLS connection established from unknown[46.148.40.155]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:53:15 bc9524eb1023 postfix/smtps/smtpd[30590]: warning: unknown[46.148.40.155]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:53:56 bc9524eb1023 postfix/submission/smtpd[30647]: connect from seguipass.com[154.53.35.184]
May 5 10:53:56 bc9524eb1023 postfix/submission/smtpd[30647]: lost connection after CONNECT from seguipass.com[154.53.35.184]
May 5 10:53:56 bc9524eb1023 postfix/submission/smtpd[30647]: disconnect from seguipass.com[154.53.35.184] commands=0/0
May 5 10:56:56 bc9524eb1023 postfix/smtps/smtpd[30643]: timeout after AUTH from unknown[46.148.40.150]
May 5 10:56:56 bc9524eb1023 postfix/smtps/smtpd[30643]: disconnect from unknown[46.148.40.150] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:58:15 bc9524eb1023 postfix/smtps/smtpd[30590]: timeout after AUTH from unknown[46.148.40.155]
May 5 10:58:15 bc9524eb1023 postfix/smtps/smtpd[30590]: disconnect from unknown[46.148.40.155] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 11:00:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection rate 1/60s for (smtps:46.148.40.150) at May 5 10:51:47
May 5 11:00:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection count 1 for (smtps:46.148.40.150) at May 5 10:51:47
May 5 11:00:28 bc9524eb1023 postfix/anvil[24516]: statistics: max cache size 4 at May 5 10:53:56
May 5 11:01:22 bc9524eb1023 postfix/postscreen[30669]: CONNECT from [84.54.50.232]:57540 to [172.22.1.253]:25
May 5 11:01:22 bc9524eb1023 whitelist_forwardinghosts: Look up 84.54.50.232 on whitelist, result 200 DUNNO
May 5 11:01:22 bc9524eb1023 postfix/postscreen[30669]: PREGREET 11 after 0.01 from [84.54.50.232]:57540: EHLO User\r\n
May 5 11:01:22 bc9524eb1023 postfix/dnsblog[30680]: addr 84.54.50.232 listed by domain bl.mailspike.net as 127.0.0.2
May 5 11:01:25 bc9524eb1023 postfix/postscreen[30669]: DISCONNECT [84.54.50.232]:57540
May 5 11:01:26 bc9524eb1023 postfix/dnsblog[30683]: addr 84.54.50.232 listed by domain zen.spamhaus.org as 127.0.0.2
May 5 11:01:26 bc9524eb1023 postfix/dnsblog[30683]: addr 84.54.50.232 listed by domain zen.spamhaus.org as 127.0.0.9
May 5 11:01:26 bc9524eb1023 postfix/dnsblog[30683]: addr 84.54.50.232 listed by domain zen.spamhaus.org as 127.0.0.4
May 5 11:02:56 bc9524eb1023 postfix/postscreen[30669]: CONNECT from [64.62.197.145]:4083 to [172.22.1.253]:25
May 5 11:02:56 bc9524eb1023 whitelist_forwardinghosts: Look up 64.62.197.145 on whitelist, result 200 DUNNO
May 5 11:02:59 bc9524eb1023 postfix/postscreen[30669]: PASS NEW [64.62.197.145]:4083
May 5 11:03:05 bc9524eb1023 postfix/smtpd[30697]: connect from scan-48i.shadowserver.org[64.62.197.145]
May 5 11:03:05 bc9524eb1023 postfix/smtpd[30697]: lost connection after CONNECT from scan-48i.shadowserver.org[64.62.197.145]
May 5 11:03:05 bc9524eb1023 postfix/smtpd[30697]: disconnect from scan-48i.shadowserver.org[64.62.197.145] commands=0/0
May 5 11:06:26 bc9524eb1023 postfix/anvil[30698]: statistics: max connection rate 1/60s for (smtpd:64.62.197.145) at May 5 11:03:05
May 5 11:06:26 bc9524eb1023 postfix/anvil[30698]: statistics: max connection count 1 for (smtpd:64.62.197.145) at May 5 11:03:05
May 5 11:06:26 bc9524eb1023 postfix/anvil[30698]: statistics: max cache size 1 at May 5 11:03:05
May 5 11:11:54 bc9524eb1023 postfix/postscreen[30719]: CONNECT from [209.85.128.45]:46129 to [172.22.1.253]:25
May 5 11:11:54 bc9524eb1023 postfix/postscreen[30719]: WHITELISTED [209.85.128.45]:46129
May 5 11:12:00 bc9524eb1023 postfix/smtpd[30721]: connect from mail-wm1-f45.google.com[209.85.128.45]
May 5 11:12:01 bc9524eb1023 postfix/smtpd[30721]: TLS SNI _dc-mx.1f5a80bebde7.mindzbase.com from mail-wm1-f45.google.com[209.85.128.45] not matched, using default chain
May 5 11:12:01 bc9524eb1023 postfix/smtpd[30721]: Anonymous TLS connection established from mail-wm1-f45.google.com[209.85.128.45]: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256
May 5 11:12:06 bc9524eb1023 postfix/smtpd[30721]: 9CA76260A8C: client=mail-wm1-f45.google.com[209.85.128.45]
May 5 11:12:06 bc9524eb1023 postfix/cleanup[30723]: 9CA76260A8C: message-id=A6889BEE-8316-4C17-BAD6-98D545598D46@gmail.com
May 5 11:12:18 bc9524eb1023 postfix/qmgr[346]: 9CA76260A8C: from=authentic8advertising@gmail.com, size=11523, nrcpt=1 (queue active)
May 5 11:12:18 bc9524eb1023 postfix/lmtp[30725]: 9CA76260A8C: to=yasir.mehmood@mindzbase.com, relay=dovecot[fd4d:6169:6c63:6f77::10]:24, delay=17, delays=17/0.02/0.01/0.09, dsn=2.0.0, status=sent (250 2.0.0 yasir.mehmood@mindzbase.com kHWLGUKeVGQSBAUANyZLRw Saved)
May 5 11:12:18 bc9524eb1023 postfix/qmgr[346]: 9CA76260A8C: removed
May 5 11:12:49 bc9524eb1023 postfix/smtpd[30721]: disconnect from mail-wm1-f45.google.com[209.85.128.45] ehlo=2 starttls=1 mail=1 rcpt=1 bdat=1 quit=1 commands=7
May 5 11:16:09 bc9524eb1023 postfix/anvil[30722]: statistics: max connection rate 1/60s for (smtpd:209.85.128.45) at May 5 11:12:01
May 5 11:16:09 bc9524eb1023 postfix/anvil[30722]: statistics: max connection count 1 for (smtpd:209.85.128.45) at May 5 11:12:01
May 5 11:16:09 bc9524eb1023 postfix/anvil[30722]: statistics: max cache size 1 at May 5 11:12:01
May 5 11:32:49 bc9524eb1023 postfix/postscreen[30778]: CONNECT from [154.53.35.184]:63454 to [172.22.1.253]:25
May 5 11:32:49 bc9524eb1023 whitelist_forwardinghosts: Look up 154.53.35.184 on whitelist, result 200 DUNNO
May 5 11:32:49 bc9524eb1023 postfix/postscreen[30778]: HANGUP after 0.08 from [154.53.35.184]:63454 in tests before SMTP handshake
May 5 11:32:49 bc9524eb1023 postfix/postscreen[30778]: DISCONNECT [154.53.35.184]:63454
May 5 11:41:41 bc9524eb1023 postfix/postscreen[30817]: CONNECT from [85.208.136.245]:56183 to [172.22.1.253]:25
May 5 11:41:41 bc9524eb1023 whitelist_forwardinghosts: Look up 85.208.136.245 on whitelist, result 200 DUNNO
May 5 11:41:41 bc9524eb1023 postfix/postscreen[30817]: PREGREET 11 after 0.01 from [85.208.136.245]:56183: EHLO User\r\n
May 5 11:41:41 bc9524eb1023 postfix/dnsblog[30827]: addr 85.208.136.245 listed by domain bl.mailspike.net as 127.0.0.2
May 5 11:41:41 bc9524eb1023 postfix/dnsblog[30829]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.11
May 5 11:41:41 bc9524eb1023 postfix/dnsblog[30829]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.4
May 5 11:41:41 bc9524eb1023 postfix/dnsblog[30829]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.2
May 5 11:41:41 bc9524eb1023 postfix/dnsblog[30829]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.9
May 5 11:41:44 bc9524eb1023 postfix/postscreen[30817]: DNSBL rank 22 for [85.208.136.245]:56183
May 5 11:41:44 bc9524eb1023 postfix/postscreen[30817]: DISCONNECT [85.208.136.245]:56183
May 5 12:21:40 bc9524eb1023 postfix/postscreen[30915]: CONNECT from [108.174.0.197]:42523 to [172.22.1.253]:25
May 5 12:21:40 bc9524eb1023 postfix/postscreen[30915]: WHITELISTED [108.174.0.197]:42523
May 5 12:21:42 bc9524eb1023 postfix/smtpd[30917]: connect from maile-ge.linkedin.com[108.174.0.197]
May 5 12:21:43 bc9524eb1023 postfix/smtpd[30917]: Anonymous TLS connection established from maile-ge.linkedin.com[108.174.0.197]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 12:21:46 bc9524eb1023 postfix/smtpd[30917]: 6096B260A4A: client=maile-ge.linkedin.com[108.174.0.197]
May 5 12:21:46 bc9524eb1023 postfix/cleanup[30919]: 6096B260A4A: message-id=812769127.7453125.1683271292999@lva1-app72697.prod.linkedin.com
May 5 12:21:58 bc9524eb1023 postfix/qmgr[346]: 6096B260A4A: from=m-9n57fhy0ypdijy6fpckqaowb6maeo5rzfc8yigz58lj7okelpz2dmkmg5gaqlx@bounce.linkedin.com, size=53793, nrcpt=1 (queue active)
May 5 12:21:59 bc9524eb1023 postfix/lmtp[30921]: 6096B260A4A: to=careers@mindzbase.com, relay=dovecot[fd4d:6169:6c63:6f77::10]:24, delay=15, delays=15/0.03/0/0.18, dsn=2.0.0, status=sent (250 2.0.0 careers@mindzbase.com eCimNpauVGTxEAUANyZLRw Saved)
May 5 12:21:59 bc9524eb1023 postfix/qmgr[346]: 6096B260A4A: removed
May 5 12:22:04 bc9524eb1023 postfix/smtpd[30917]: disconnect from maile-ge.linkedin.com[108.174.0.197] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
May 5 12:25:24 bc9524eb1023 postfix/anvil[30918]: statistics: max connection rate 1/60s for (smtpd:108.174.0.197) at May 5 12:21:42
May 5 12:25:24 bc9524eb1023 postfix/anvil[30918]: statistics: max connection count 1 for (smtpd:108.174.0.197) at May 5 12:21:42
May 5 12:25:24 bc9524eb1023 postfix/anvil[30918]: statistics: max cache size 1 at May 5 12:21:42
May 5 12:31:50 bc9524eb1023 postfix/postscreen[30945]: CONNECT from [85.208.136.245]:50730 to [172.22.1.253]:25
May 5 12:31:51 bc9524eb1023 whitelist_forwardinghosts: Look up 85.208.136.245 on whitelist, result 200 DUNNO
May 5 12:31:51 bc9524eb1023 postfix/postscreen[30945]: PREGREET 11 after 0.01 from [85.208.136.245]:50730: EHLO User\r\n
May 5 12:31:51 bc9524eb1023 postfix/dnsblog[30956]: addr 85.208.136.245 listed by domain bl.mailspike.net as 127.0.0.2
May 5 12:31:52 bc9524eb1023 postfix/dnsblog[30959]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.2
May 5 12:31:52 bc9524eb1023 postfix/dnsblog[30959]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.9
May 5 12:31:52 bc9524eb1023 postfix/dnsblog[30959]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.11
May 5 12:31:52 bc9524eb1023 postfix/dnsblog[30959]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.4
May 5 12:31:54 bc9524eb1023 postfix/postscreen[30945]: DNSBL rank 22 for [85.208.136.245]:50730
May 5 12:31:54 bc9524eb1023 postfix/postscreen[30945]: DISCONNECT [85.208.136.245]:50730
May 5 12:33:25 bc9524eb1023 postfix/postscreen[30945]: CONNECT from [35.203.211.127]:62098 to [172.22.1.253]:25
May 5 12:33:25 bc9524eb1023 whitelist_forwardinghosts: Look up 35.203.211.127 on whitelist, result 200 DUNNO
May 5 12:33:25 bc9524eb1023 postfix/postscreen[30945]: PREGREET 326 after 0 from [35.203.211.127]:62098: GET / HTTP/1.1\r\nHost: 185.215.165.72:25\r\nUser-Agent: Expanse, a Palo Alto Networks company, sear
May 5 12:33:28 bc9524eb1023 postfix/postscreen[30945]: NON-SMTP COMMAND from [35.203.211.127]:62098 after CONNECT: GET / HTTP/1.1
May 5 12:33:28 bc9524eb1023 postfix/postscreen[30945]: DISCONNECT [35.203.211.127]:62098
May 5 12:42:05 bc9524eb1023 postfix/smtps/smtpd[30989]: connect from seguipass.com[154.53.35.184]
May 5 12:42:07 bc9524eb1023 postfix/smtps/smtpd[30989]: SSL_accept error from seguipass.com[154.53.35.184]: lost connection
May 5 12:42:07 bc9524eb1023 postfix/smtps/smtpd[30989]: lost connection after CONNECT from seguipass.com[154.53.35.184]
May 5 12:42:07 bc9524eb1023 postfix/smtps/smtpd[30989]: disconnect from seguipass.com[154.53.35.184] commands=0/0
PostFix logs
May 5 10:40:31 bc9524eb1023 postfix/smtps/smtpd[30582]: warning: unknown[46.148.40.154]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:42:12 bc9524eb1023 postfix/smtps/smtpd[30590]: connect from unknown[46.148.40.163]
May 5 10:42:14 bc9524eb1023 postfix/smtps/smtpd[30590]: Anonymous TLS connection established from unknown[46.148.40.163]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:42:22 bc9524eb1023 postfix/smtps/smtpd[30590]: warning: unknown[46.148.40.163]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:43:02 bc9524eb1023 postfix/smtps/smtpd[30544]: timeout after AUTH from unknown[46.148.40.161]
May 5 10:43:02 bc9524eb1023 postfix/smtps/smtpd[30544]: disconnect from unknown[46.148.40.161] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:43:06 bc9524eb1023 postfix/smtps/smtpd[30544]: connect from unknown[46.148.40.150]
May 5 10:43:08 bc9524eb1023 postfix/smtps/smtpd[30544]: Anonymous TLS connection established from unknown[46.148.40.150]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:43:19 bc9524eb1023 postfix/smtps/smtpd[30544]: warning: unknown[46.148.40.150]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:43:21 bc9524eb1023 postfix/smtps/smtpd[30544]: lost connection after AUTH from unknown[46.148.40.150]
May 5 10:43:21 bc9524eb1023 postfix/smtps/smtpd[30544]: disconnect from unknown[46.148.40.150] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:43:50 bc9524eb1023 postfix/smtps/smtpd[30544]: connect from unknown[46.148.40.155]
May 5 10:43:52 bc9524eb1023 postfix/smtps/smtpd[30544]: Anonymous TLS connection established from unknown[46.148.40.155]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:44:04 bc9524eb1023 postfix/smtps/smtpd[30544]: warning: unknown[46.148.40.155]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:44:07 bc9524eb1023 postfix/smtps/smtpd[30544]: lost connection after AUTH from unknown[46.148.40.155]
May 5 10:44:07 bc9524eb1023 postfix/smtps/smtpd[30544]: disconnect from unknown[46.148.40.155] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:45:31 bc9524eb1023 postfix/smtps/smtpd[30582]: timeout after AUTH from unknown[46.148.40.154]
May 5 10:45:31 bc9524eb1023 postfix/smtps/smtpd[30582]: disconnect from unknown[46.148.40.154] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:47:22 bc9524eb1023 postfix/smtps/smtpd[30590]: timeout after AUTH from unknown[46.148.40.163]
May 5 10:47:22 bc9524eb1023 postfix/smtps/smtpd[30590]: disconnect from unknown[46.148.40.163] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:47:52 bc9524eb1023 postfix/smtps/smtpd[30590]: connect from unknown[46.148.40.157]
May 5 10:47:53 bc9524eb1023 postfix/smtps/smtpd[30590]: Anonymous TLS connection established from unknown[46.148.40.157]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:48:01 bc9524eb1023 postfix/smtps/smtpd[30590]: warning: unknown[46.148.40.157]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:50:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection rate 1/60s for (smtps:46.148.40.163) at May 5 10:42:14
May 5 10:50:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection count 1 for (smtps:46.148.40.163) at May 5 10:42:14
May 5 10:50:28 bc9524eb1023 postfix/anvil[24516]: statistics: max cache size 5 at May 5 10:43:52
May 5 10:51:40 bc9524eb1023 postfix/postscreen[30622]: CONNECT from [85.208.136.245]:61328 to [172.22.1.253]:25
May 5 10:51:40 bc9524eb1023 whitelist_forwardinghosts: Look up 85.208.136.245 on whitelist, result 200 DUNNO
May 5 10:51:40 bc9524eb1023 postfix/postscreen[30622]: PREGREET 11 after 0.01 from [85.208.136.245]:61328: EHLO User\r\n
May 5 10:51:40 bc9524eb1023 postfix/dnsblog[30633]: addr 85.208.136.245 listed by domain bl.mailspike.net as 127.0.0.2
May 5 10:51:43 bc9524eb1023 postfix/postscreen[30622]: DISCONNECT [85.208.136.245]:61328
May 5 10:51:47 bc9524eb1023 postfix/smtps/smtpd[30643]: connect from unknown[46.148.40.150]
May 5 10:51:47 bc9524eb1023 postfix/smtps/smtpd[30643]: Anonymous TLS connection established from unknown[46.148.40.150]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:51:47 bc9524eb1023 postfix/dnsblog[30636]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.9
May 5 10:51:47 bc9524eb1023 postfix/dnsblog[30636]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.11
May 5 10:51:47 bc9524eb1023 postfix/dnsblog[30636]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.4
May 5 10:51:47 bc9524eb1023 postfix/dnsblog[30636]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.2
May 5 10:51:56 bc9524eb1023 postfix/smtps/smtpd[30643]: warning: unknown[46.148.40.150]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:53:01 bc9524eb1023 postfix/smtps/smtpd[30590]: timeout after AUTH from unknown[46.148.40.157]
May 5 10:53:01 bc9524eb1023 postfix/smtps/smtpd[30590]: disconnect from unknown[46.148.40.157] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:53:06 bc9524eb1023 postfix/smtps/smtpd[30590]: connect from unknown[46.148.40.155]
May 5 10:53:07 bc9524eb1023 postfix/smtps/smtpd[30590]: Anonymous TLS connection established from unknown[46.148.40.155]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 10:53:15 bc9524eb1023 postfix/smtps/smtpd[30590]: warning: unknown[46.148.40.155]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 5 10:53:56 bc9524eb1023 postfix/submission/smtpd[30647]: connect from seguipass.com[154.53.35.184]
May 5 10:53:56 bc9524eb1023 postfix/submission/smtpd[30647]: lost connection after CONNECT from seguipass.com[154.53.35.184]
May 5 10:53:56 bc9524eb1023 postfix/submission/smtpd[30647]: disconnect from seguipass.com[154.53.35.184] commands=0/0
May 5 10:56:56 bc9524eb1023 postfix/smtps/smtpd[30643]: timeout after AUTH from unknown[46.148.40.150]
May 5 10:56:56 bc9524eb1023 postfix/smtps/smtpd[30643]: disconnect from unknown[46.148.40.150] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 10:58:15 bc9524eb1023 postfix/smtps/smtpd[30590]: timeout after AUTH from unknown[46.148.40.155]
May 5 10:58:15 bc9524eb1023 postfix/smtps/smtpd[30590]: disconnect from unknown[46.148.40.155] ehlo=1 auth=0/1 rset=1 commands=⅔
May 5 11:00:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection rate 1/60s for (smtps:46.148.40.150) at May 5 10:51:47
May 5 11:00:28 bc9524eb1023 postfix/anvil[24516]: statistics: max connection count 1 for (smtps:46.148.40.150) at May 5 10:51:47
May 5 11:00:28 bc9524eb1023 postfix/anvil[24516]: statistics: max cache size 4 at May 5 10:53:56
May 5 11:01:22 bc9524eb1023 postfix/postscreen[30669]: CONNECT from [84.54.50.232]:57540 to [172.22.1.253]:25
May 5 11:01:22 bc9524eb1023 whitelist_forwardinghosts: Look up 84.54.50.232 on whitelist, result 200 DUNNO
May 5 11:01:22 bc9524eb1023 postfix/postscreen[30669]: PREGREET 11 after 0.01 from [84.54.50.232]:57540: EHLO User\r\n
May 5 11:01:22 bc9524eb1023 postfix/dnsblog[30680]: addr 84.54.50.232 listed by domain bl.mailspike.net as 127.0.0.2
May 5 11:01:25 bc9524eb1023 postfix/postscreen[30669]: DISCONNECT [84.54.50.232]:57540
May 5 11:01:26 bc9524eb1023 postfix/dnsblog[30683]: addr 84.54.50.232 listed by domain zen.spamhaus.org as 127.0.0.2
May 5 11:01:26 bc9524eb1023 postfix/dnsblog[30683]: addr 84.54.50.232 listed by domain zen.spamhaus.org as 127.0.0.9
May 5 11:01:26 bc9524eb1023 postfix/dnsblog[30683]: addr 84.54.50.232 listed by domain zen.spamhaus.org as 127.0.0.4
May 5 11:02:56 bc9524eb1023 postfix/postscreen[30669]: CONNECT from [64.62.197.145]:4083 to [172.22.1.253]:25
May 5 11:02:56 bc9524eb1023 whitelist_forwardinghosts: Look up 64.62.197.145 on whitelist, result 200 DUNNO
May 5 11:02:59 bc9524eb1023 postfix/postscreen[30669]: PASS NEW [64.62.197.145]:4083
May 5 11:03:05 bc9524eb1023 postfix/smtpd[30697]: connect from scan-48i.shadowserver.org[64.62.197.145]
May 5 11:03:05 bc9524eb1023 postfix/smtpd[30697]: lost connection after CONNECT from scan-48i.shadowserver.org[64.62.197.145]
May 5 11:03:05 bc9524eb1023 postfix/smtpd[30697]: disconnect from scan-48i.shadowserver.org[64.62.197.145] commands=0/0
May 5 11:06:26 bc9524eb1023 postfix/anvil[30698]: statistics: max connection rate 1/60s for (smtpd:64.62.197.145) at May 5 11:03:05
May 5 11:06:26 bc9524eb1023 postfix/anvil[30698]: statistics: max connection count 1 for (smtpd:64.62.197.145) at May 5 11:03:05
May 5 11:06:26 bc9524eb1023 postfix/anvil[30698]: statistics: max cache size 1 at May 5 11:03:05
May 5 11:11:54 bc9524eb1023 postfix/postscreen[30719]: CONNECT from [209.85.128.45]:46129 to [172.22.1.253]:25
May 5 11:11:54 bc9524eb1023 postfix/postscreen[30719]: WHITELISTED [209.85.128.45]:46129
May 5 11:12:00 bc9524eb1023 postfix/smtpd[30721]: connect from mail-wm1-f45.google.com[209.85.128.45]
May 5 11:12:01 bc9524eb1023 postfix/smtpd[30721]: TLS SNI _dc-mx.1f5a80bebde7.mindzbase.com from mail-wm1-f45.google.com[209.85.128.45] not matched, using default chain
May 5 11:12:01 bc9524eb1023 postfix/smtpd[30721]: Anonymous TLS connection established from mail-wm1-f45.google.com[209.85.128.45]: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256
May 5 11:12:06 bc9524eb1023 postfix/smtpd[30721]: 9CA76260A8C: client=mail-wm1-f45.google.com[209.85.128.45]
May 5 11:12:06 bc9524eb1023 postfix/cleanup[30723]: 9CA76260A8C: message-id=A6889BEE-8316-4C17-BAD6-98D545598D46@gmail.com
May 5 11:12:18 bc9524eb1023 postfix/qmgr[346]: 9CA76260A8C: from=authentic8advertising@gmail.com, size=11523, nrcpt=1 (queue active)
May 5 11:12:18 bc9524eb1023 postfix/lmtp[30725]: 9CA76260A8C: to=yasir.mehmood@mindzbase.com, relay=dovecot[fd4d:6169:6c63:6f77::10]:24, delay=17, delays=17/0.02/0.01/0.09, dsn=2.0.0, status=sent (250 2.0.0 yasir.mehmood@mindzbase.com kHWLGUKeVGQSBAUANyZLRw Saved)
May 5 11:12:18 bc9524eb1023 postfix/qmgr[346]: 9CA76260A8C: removed
May 5 11:12:49 bc9524eb1023 postfix/smtpd[30721]: disconnect from mail-wm1-f45.google.com[209.85.128.45] ehlo=2 starttls=1 mail=1 rcpt=1 bdat=1 quit=1 commands=7
May 5 11:16:09 bc9524eb1023 postfix/anvil[30722]: statistics: max connection rate 1/60s for (smtpd:209.85.128.45) at May 5 11:12:01
May 5 11:16:09 bc9524eb1023 postfix/anvil[30722]: statistics: max connection count 1 for (smtpd:209.85.128.45) at May 5 11:12:01
May 5 11:16:09 bc9524eb1023 postfix/anvil[30722]: statistics: max cache size 1 at May 5 11:12:01
May 5 11:32:49 bc9524eb1023 postfix/postscreen[30778]: CONNECT from [154.53.35.184]:63454 to [172.22.1.253]:25
May 5 11:32:49 bc9524eb1023 whitelist_forwardinghosts: Look up 154.53.35.184 on whitelist, result 200 DUNNO
May 5 11:32:49 bc9524eb1023 postfix/postscreen[30778]: HANGUP after 0.08 from [154.53.35.184]:63454 in tests before SMTP handshake
May 5 11:32:49 bc9524eb1023 postfix/postscreen[30778]: DISCONNECT [154.53.35.184]:63454
May 5 11:41:41 bc9524eb1023 postfix/postscreen[30817]: CONNECT from [85.208.136.245]:56183 to [172.22.1.253]:25
May 5 11:41:41 bc9524eb1023 whitelist_forwardinghosts: Look up 85.208.136.245 on whitelist, result 200 DUNNO
May 5 11:41:41 bc9524eb1023 postfix/postscreen[30817]: PREGREET 11 after 0.01 from [85.208.136.245]:56183: EHLO User\r\n
May 5 11:41:41 bc9524eb1023 postfix/dnsblog[30827]: addr 85.208.136.245 listed by domain bl.mailspike.net as 127.0.0.2
May 5 11:41:41 bc9524eb1023 postfix/dnsblog[30829]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.11
May 5 11:41:41 bc9524eb1023 postfix/dnsblog[30829]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.4
May 5 11:41:41 bc9524eb1023 postfix/dnsblog[30829]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.2
May 5 11:41:41 bc9524eb1023 postfix/dnsblog[30829]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.9
May 5 11:41:44 bc9524eb1023 postfix/postscreen[30817]: DNSBL rank 22 for [85.208.136.245]:56183
May 5 11:41:44 bc9524eb1023 postfix/postscreen[30817]: DISCONNECT [85.208.136.245]:56183
May 5 12:21:40 bc9524eb1023 postfix/postscreen[30915]: CONNECT from [108.174.0.197]:42523 to [172.22.1.253]:25
May 5 12:21:40 bc9524eb1023 postfix/postscreen[30915]: WHITELISTED [108.174.0.197]:42523
May 5 12:21:42 bc9524eb1023 postfix/smtpd[30917]: connect from maile-ge.linkedin.com[108.174.0.197]
May 5 12:21:43 bc9524eb1023 postfix/smtpd[30917]: Anonymous TLS connection established from maile-ge.linkedin.com[108.174.0.197]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 5 12:21:46 bc9524eb1023 postfix/smtpd[30917]: 6096B260A4A: client=maile-ge.linkedin.com[108.174.0.197]
May 5 12:21:46 bc9524eb1023 postfix/cleanup[30919]: 6096B260A4A: message-id=812769127.7453125.1683271292999@lva1-app72697.prod.linkedin.com
May 5 12:21:58 bc9524eb1023 postfix/qmgr[346]: 6096B260A4A: from=m-9n57fhy0ypdijy6fpckqaowb6maeo5rzfc8yigz58lj7okelpz2dmkmg5gaqlx@bounce.linkedin.com, size=53793, nrcpt=1 (queue active)
May 5 12:21:59 bc9524eb1023 postfix/lmtp[30921]: 6096B260A4A: to=careers@mindzbase.com, relay=dovecot[fd4d:6169:6c63:6f77::10]:24, delay=15, delays=15/0.03/0/0.18, dsn=2.0.0, status=sent (250 2.0.0 careers@mindzbase.com eCimNpauVGTxEAUANyZLRw Saved)
May 5 12:21:59 bc9524eb1023 postfix/qmgr[346]: 6096B260A4A: removed
May 5 12:22:04 bc9524eb1023 postfix/smtpd[30917]: disconnect from maile-ge.linkedin.com[108.174.0.197] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
May 5 12:25:24 bc9524eb1023 postfix/anvil[30918]: statistics: max connection rate 1/60s for (smtpd:108.174.0.197) at May 5 12:21:42
May 5 12:25:24 bc9524eb1023 postfix/anvil[30918]: statistics: max connection count 1 for (smtpd:108.174.0.197) at May 5 12:21:42
May 5 12:25:24 bc9524eb1023 postfix/anvil[30918]: statistics: max cache size 1 at May 5 12:21:42
May 5 12:31:50 bc9524eb1023 postfix/postscreen[30945]: CONNECT from [85.208.136.245]:50730 to [172.22.1.253]:25
May 5 12:31:51 bc9524eb1023 whitelist_forwardinghosts: Look up 85.208.136.245 on whitelist, result 200 DUNNO
May 5 12:31:51 bc9524eb1023 postfix/postscreen[30945]: PREGREET 11 after 0.01 from [85.208.136.245]:50730: EHLO User\r\n
May 5 12:31:51 bc9524eb1023 postfix/dnsblog[30956]: addr 85.208.136.245 listed by domain bl.mailspike.net as 127.0.0.2
May 5 12:31:52 bc9524eb1023 postfix/dnsblog[30959]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.2
May 5 12:31:52 bc9524eb1023 postfix/dnsblog[30959]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.9
May 5 12:31:52 bc9524eb1023 postfix/dnsblog[30959]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.11
May 5 12:31:52 bc9524eb1023 postfix/dnsblog[30959]: addr 85.208.136.245 listed by domain zen.spamhaus.org as 127.0.0.4
May 5 12:31:54 bc9524eb1023 postfix/postscreen[30945]: DNSBL rank 22 for [85.208.136.245]:50730
May 5 12:31:54 bc9524eb1023 postfix/postscreen[30945]: DISCONNECT [85.208.136.245]:50730
May 5 12:33:25 bc9524eb1023 postfix/postscreen[30945]: CONNECT from [35.203.211.127]:62098 to [172.22.1.253]:25
May 5 12:33:25 bc9524eb1023 whitelist_forwardinghosts: Look up 35.203.211.127 on whitelist, result 200 DUNNO
May 5 12:33:25 bc9524eb1023 postfix/postscreen[30945]: PREGREET 326 after 0 from [35.203.211.127]:62098: GET / HTTP/1.1\r\nHost: 185.215.165.72:25\r\nUser-Agent: Expanse, a Palo Alto Networks company, sear
May 5 12:33:28 bc9524eb1023 postfix/postscreen[30945]: NON-SMTP COMMAND from [35.203.211.127]:62098 after CONNECT: GET / HTTP/1.1
May 5 12:33:28 bc9524eb1023 postfix/postscreen[30945]: DISCONNECT [35.203.211.127]:62098
May 5 12:42:05 bc9524eb1023 postfix/smtps/smtpd[30989]: connect from seguipass.com[154.53.35.184]
May 5 12:42:07 bc9524eb1023 postfix/smtps/smtpd[30989]: SSL_accept error from seguipass.com[154.53.35.184]: lost connection
May 5 12:42:07 bc9524eb1023 postfix/smtps/smtpd[30989]: lost connection after CONNECT from seguipass.com[154.53.35.184]
May 5 12:42:07 bc9524eb1023 postfix/smtps/smtpd[30989]: disconnect from seguipass.com[154.53.35.184] commands=0/0
root@vmi1251747:~#
Here is link to logs:
https://www.dropbox.com/t/rzEUKaktbDnfmoBl