@esackbauer I am encountering this issue as well. My domain is mail.techmonium.tech – I do not fully understand what is being shown. Am I supposed to use a cloudflare tunnel to route it to port 25? SMTP works fine, but not receiving emails. Postfix logs below:
Time Priority Message
03/15/2025, 11:37:08 AM info disconnect from mailcowdockerized-acme-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.11] ehlo=1 starttls=1 commands=2
03/15/2025, 11:37:08 AM info lost connection after STARTTLS from mailcowdockerized-acme-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.11]
03/15/2025, 11:37:08 AM info Anonymous TLS connection established from mailcowdockerized-acme-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.11]: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256
03/15/2025, 11:37:08 AM info ALLOWLISTED [172.22.1.11]:50512
03/15/2025, 11:37:08 AM info CONNECT from [172.22.1.11]:50512 to [172.22.1.253]:25
03/15/2025, 11:37:08 AM info connect from mailcowdockerized-acme-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.11]
03/15/2025, 11:37:08 AM info disconnect from mailcowdockerized-acme-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.11] ehlo=1 starttls=1 commands=2
03/15/2025, 11:37:08 AM info lost connection after STARTTLS from mailcowdockerized-acme-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.11]
03/15/2025, 11:37:08 AM info Anonymous TLS connection established from mailcowdockerized-acme-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.11]: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256
03/15/2025, 11:37:08 AM info connect from mailcowdockerized-acme-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.11]
03/15/2025, 11:37:08 AM info ALLOWLISTED [172.22.1.11]:50496
03/15/2025, 11:37:08 AM info CONNECT from [172.22.1.11]:50496 to [172.22.1.253]:25
03/15/2025, 11:34:00 AM info 2A05865585: removed
03/15/2025, 11:34:00 AM info 2A05865585: to=<samuel.otten@greenwichschools.org>, relay=aspmx.l.google.com[142.251.167.26]:25, delay=5.6, delays=3.3/0.17/1.5/0.6, dsn=2.0.0, status=sent (250 2.0.0 OK 1742052840 af79cd13be357-7c573cae6c7si591020285a.228 - gsmtp)
03/15/2025, 11:34:00 AM info 2A05865585: to=<m.otten@ieee.org>, relay=mxtls.expurgate.net[195.190.135.121]:25, delay=5, delays=3.3/0.31/0.85/0.49, dsn=2.0.0, status=sent (250 OK id=tlsNG-16d1c6/1742052840-64B6DFBA-50C2753B/0/0)
03/15/2025, 11:34:00 AM info Trusted TLS connection established to aspmx.l.google.com[142.251.167.26]:25: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256
03/15/2025, 11:33:59 AM info connect to aspmx.l.google.com[2607:f8b0:4004:c19::1b]:25: Network is unreachable
03/15/2025, 11:33:59 AM info Trusted TLS connection established to mxtls.expurgate.net[195.190.135.121]:25: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
03/15/2025, 11:33:58 AM info disconnect from mailcowdockerized-sogo-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.248] ehlo=1 auth=1 mail=1 rcpt=2 data=1 quit=1 commands=7
03/15/2025, 11:33:58 AM info 2A05865585: from=<test@techmonium.tech>, size=920, nrcpt=2 (queue active)
03/15/2025, 11:33:57 AM info 2A05865585: message-id=<13b-67d59e00-5-61854080@209349811>
03/15/2025, 11:33:57 AM info 2A05865585: replace: header Received: from 7f667b5c9db6 (mailcowdockerized-sogo-mailcow-1.mailcowdockerized_mailcow-network [172.22.1.248])??(Authenticated sender: test@techmonium.tech)??by mail.techmonium.tech (Postcow) with ES from mailcowdockerized-sogo-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.248]; from=<test@techmonium.tech> to=<samuel.otten@greenwichschools.org> proto=ESMTP helo=<7f667b5c9db6>: Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPA id 2A05865585;??Sat, 15 Mar 2025 15:33:55 +0000 (UTC)
03/15/2025, 11:33:56 AM info 2A05865585: client=mailcowdockerized-sogo-mailcow-1.mailcowdockerized_mailcow-network[172.22.1.248], sasl_method=PLAIN, sasl_username=test@techmonium.tech
[unknown]
Dovecot as well:
03/15/2025, 12:04:20 PM info managesieve-login: Disconnected: Connection closed (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250
03/15/2025, 12:04:20 PM info imap-login: Disconnected: Aborted login by logging out (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250
03/15/2025, 12:04:20 PM info imap-login: Disconnected: Aborted login by logging out (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250, TLS, TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
03/15/2025, 12:04:20 PM info lmtp(224750): Disconnect from 172.22.1.12: Logged out (state=MAIL FROM)
03/15/2025, 12:04:20 PM info auth-worker(226595): conn unix:auth-worker (pid=185,uid=401): auth-worker<6>: sql(watchdog@invalid,172.22.1.12): unknown user
03/15/2025, 12:04:20 PM info lmtp(224750): Connect from 172.22.1.12
03/15/2025, 12:03:31 PM info managesieve-login: Disconnected: Connection closed (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250
03/15/2025, 12:03:31 PM info imap-login: Disconnected: Aborted login by logging out (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250
03/15/2025, 12:03:31 PM info imap-login: Disconnected: Aborted login by logging out (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250, TLS, TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
03/15/2025, 12:03:31 PM info lmtp(224750): Disconnect from 172.22.1.12: Logged out (state=MAIL FROM)
03/15/2025, 12:03:31 PM info auth-worker(226595): conn unix:auth-worker (pid=185,uid=401): auth-worker<5>: sql(watchdog@invalid,172.22.1.12): unknown user
03/15/2025, 12:03:31 PM info lmtp(224750): Connect from 172.22.1.12
[unknown]
Dovecot as well:
03/15/2025, 12:04:20 PM info managesieve-login: Disconnected: Connection closed (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250
03/15/2025, 12:04:20 PM info imap-login: Disconnected: Aborted login by logging out (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250
03/15/2025, 12:04:20 PM info imap-login: Disconnected: Aborted login by logging out (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250, TLS, TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
03/15/2025, 12:04:20 PM info lmtp(224750): Disconnect from 172.22.1.12: Logged out (state=MAIL FROM)
03/15/2025, 12:04:20 PM info auth-worker(226595): conn unix:auth-worker (pid=185,uid=401): auth-worker<6>: sql(watchdog@invalid,172.22.1.12): unknown user
03/15/2025, 12:04:20 PM info lmtp(224750): Connect from 172.22.1.12
03/15/2025, 12:03:31 PM info managesieve-login: Disconnected: Connection closed (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250
03/15/2025, 12:03:31 PM info imap-login: Disconnected: Aborted login by logging out (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250
03/15/2025, 12:03:31 PM info imap-login: Disconnected: Aborted login by logging out (no auth attempts in 0 secs): user=<>, rip=172.22.1.12, lip=172.22.1.250, TLS, TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
03/15/2025, 12:03:31 PM info lmtp(224750): Disconnect from 172.22.1.12: Logged out (state=MAIL FROM)
03/15/2025, 12:03:31 PM info auth-worker(226595): conn unix:auth-worker (pid=185,uid=401): auth-worker<5>: sql(watchdog@invalid,172.22.1.12): unknown user
03/15/2025, 12:03:31 PM info lmtp(224750): Connect from 172.22.1.12