Hello,
my HP OfficeJet Pro 9010 suddenly can’t send mail to my Mailcow installation. While I am quite sure, it’s not Mailcow’s fault, maybe there is something to tweak on it’s side. The postfix log is
Jan 12 21:47:00 058c11dc2ab6 postfix/submission/smtpd[153244]: connect from senderhost.dip0.t-ipconnect.de[2003:e7:ef0a:fa00:16cb:19ff:fe30:957]
Jan 12 21:47:00 058c11dc2ab6 postfix/submission/smtpd[153244]: TLS SNI mail.example.com from senderhost.dip0.t-ipconnect.de[2003:e7:ef0a:fa00:16cb:19ff:fe30:957] not matched, using default chain
Jan 12 21:47:01 058c11dc2ab6 postfix/submission/smtpd[153244]: Anonymous TLS connection established from senderhost.dip0.t-ipconnect.de[2003:e7:ef0a:fa00:16cb:19ff:fe30:957]: TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)
Jan 12 21:47:01 058c11dc2ab6 postfix/submission/smtpd[153244]: 4CA8B18A7C3: client=senderhost.dip0.t-ipconnect.de[2003:e7:ef0a:fa00:16cb:19ff:fe30:957], sasl_method=PLAIN, sasl_username=sender@example.com
Jan 12 21:47:06 058c11dc2ab6 postfix/submission/smtpd[153244]: bare <LF> received after DATA (355 bytes) from senderhost.dip0.t-ipconnect.de[2003:e7:ef0a:fa00:16cb:19ff:fe30:957]
Jan 12 21:47:06 058c11dc2ab6 postfix/submission/smtpd[153244]: disconnect from senderhost.dip0.t-ipconnect.de[2003:e7:ef0a:fa00:16cb:19ff:fe30:957] ehlo=2 starttls=1 auth=1 mail=1 rcpt=1 data=0/1 commands=6/7
Jan 12 21:47:06 058c11dc2ab6 postfix/cleanup[153258]: 4CA8B18A7C3: replace: header Received: from HP300956 (senderhost.dip0.t-ipconnect.de [IPv6:2003:e7:ef0a:fa00:16cb:19ff:fe30:957])??(using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits))??(No c from senderhost.dip0.t-ipconnect.de[2003:e7:ef0a:fa00:16cb:19ff:fe30:957]; from=<sender@example.com> to=<recipient@example.com> proto=ESMTP helo=<HP300956>: Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 4CA8B18A7C3??for <recipient@example.com>; Fri, 12 Jan 2024 21:47:01 +0100 (CET)
The error message from the printer is not helpful in any way.
Is there something I could possible change at my Mailcow configuration?
Thanks!