Hi, meine Mailcow läuft seit ein paar Monaten eigentlich sehr zuverlässig. Jetzt habe ich das Problem, dass ich mails von dem Portal elster.de nicht empfangen kann. Ich habe mal testweise den MX-Record auf einen externen Anbieter umgebogen, dann ging es problemlos. Nur die Mailcow nimmt die Mails aus irgendeinem Grund nicht an. Aus den Logs werde ich nicht schlau. Wie erfolgt nach “Anonymous TLS connection established” ein disconnect?
Jan 18 17:02:48 8a42c2f7f3e8 postfix/postscreen[34536]: CONNECT from [2a02:1140:109:1002:ac20:15ff:fe07:2001]:32952 to [xxx]:25
Jan 18 17:02:48 8a42c2f7f3e8 whitelist_forwardinghosts: Look up 2a02:1140:109:1002:ac20:15ff:fe07:2001 on whitelist, result 200 DUNNO
Jan 18 17:02:48 8a42c2f7f3e8 postfix/dnsblog[34556]: addr 2a02:1140:109:1002:ac20:15ff:fe07:2001 listed by domain list.dnswl.org as 127.0.8.3
Jan 18 17:02:51 8a42c2f7f3e8 postfix/postscreen[34536]: PASS OLD [2a02:1140:109:1002:ac20:15ff:fe07:2001]:32952
Jan 18 17:02:51 8a42c2f7f3e8 postfix/smtpd[34584]: connect from mail1.elster.de[2a02:1140:109:1002:ac20:15ff:fe07:2001]
Jan 18 17:02:51 8a42c2f7f3e8 postfix/smtpd[34584]: Anonymous TLS connection established from mail1.elster.de[2a02:1140:109:1002:ac20:15ff:fe07:2001] to mail.example.org: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (2048 bits) server-digest SHA256
Jan 18 17:02:51 8a42c2f7f3e8 postfix/smtpd[34584]: disconnect from mail1.elster.de[2a02:1140:109:1002:ac20:15ff:fe07:2001] ehlo=1 starttls=1 quit=1 commands=3
Jan 18 17:02:51 8a42c2f7f3e8 postfix/postscreen[34536]: CONNECT from [185.176.165.36]:55182 to [172.22.1.253]:25
Jan 18 17:02:51 8a42c2f7f3e8 whitelist_forwardinghosts: Look up 185.176.165.36 on whitelist, result 200 DUNNO
Jan 18 17:02:51 8a42c2f7f3e8 postfix/dnsblog[34557]: addr 185.176.165.36 listed by domain list.dnswl.org as 127.0.8.3
Jan 18 17:02:54 8a42c2f7f3e8 postfix/postscreen[34536]: PASS OLD [185.176.165.36]:55182
Jan 18 17:02:54 8a42c2f7f3e8 postfix/smtpd[34588]: connect from mail1.elster.de[185.176.165.36]
Jan 18 17:02:54 8a42c2f7f3e8 postfix/smtpd[34588]: Anonymous TLS connection established from mail1.elster.de[185.176.165.36] to mail.example.org: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (2048 bits) server-digest SHA256
Jan 18 17:02:54 8a42c2f7f3e8 postfix/smtpd[34588]: disconnect from mail1.elster.de[185.176.165.36] ehlo=1 starttls=1 quit=1 commands=3