Delivery Suspended

Juliano Silva

Well-Known Member
Oct 15, 2017

How do i solve this problems port 26

delivery temporaril suspended: connect to 2404:6800:4008:c00::1a]:25 Cannot assign requested address
I am having several issues with this error also attached


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Nov 1 15:32:38 protection postfix/smtpd[12907]: connect from[]
Nov 1 15:32:39 protection postfix/smtpd[12907]: Anonymous TLS connection established from[]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
Nov 1 15:32:40 protection postfix/smtpd[12907]: 37CE4BC1844:[]
Nov 1 15:32:40 protection postfix/cleanup[12847]: 37CE4BC1844: message-id=<>
Nov 1 15:32:41 protection postfix/qmgr[705]: 37CE4BC1844: from=<>, size=102659, nrcpt=1 (queue active)
Nov 1 15:32:41 protection pmg-smtp-filter[11230]: BC18755DBC7A4969D4A: new mail message-id=<>
Nov 1 15:32:41 protection postfix/smtpd[12907]: disconnect from[] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
Nov 1 15:32:47 protection pmg-smtp-filter[11230]: BC18755DBC7A4969D4A: SA score=0/5 time=5.442 bayes=0.00 autolearn=no autolearn_force=no hits=BAYES_00(-1.9),DKIM_SIGNED(0.1),DKIM_VALID(-0.1),DKIM_VALID_AU(-0.1),DKIM_VALID_EF(-0.1),HTML_MESSAGE(0.001),HTML_MIME_NO_HTML_TAG(0.377),MIME_HTML_ONLY(0.1),SPF_HELO_NONE(0.001),SPF_PASS(-0.001)
Nov 1 15:32:47 protection postfix/smtpd[3650]: connect from localhost[]
Nov 1 15:32:47 protection postfix/smtpd[3650]: 1D4E9BC18FD: client=localhost[],[]
Nov 1 15:32:47 protection postfix/cleanup[12847]: 1D4E9BC18FD: message-id=<>
Nov 1 15:32:47 protection postfix/qmgr[705]: 1D4E9BC18FD: from=<>, size=103876, nrcpt=1 (queue active)
Nov 1 15:32:47 protection postfix/smtpd[3650]: disconnect from localhost[] ehlo=1 xforward=1 mail=1 rcpt=1 data=1 commands=5
Nov 1 15:32:47 protection pmg-smtp-filter[11230]: BC18755DBC7A4969D4A: accept mail to <> (1D4E9BC18FD) (rule: default-accept)
Nov 1 15:32:47 protection pmg-smtp-filter[11230]: BC18755DBC7A4969D4A: processing time: 5.753 seconds (5.442, 0.165, 0)
Nov 1 15:32:47 protection postfix/lmtp[7946]: 37CE4BC1844: to=<>, relay=[]:10024, delay=7.7, delays=1.9/0/0.04/5.8, dsn=2.5.0, status=sent (250 2.5.0 OK (BC18755DBC7A4969D4A))
Nov 1 15:32:47 protection postfix/smtp[12337]: 1D4E9BC18FD: to=<>, relay=none, delay=0.11, delays=0.11/0/0/0, dsn=4.4.1, status=deferred (connect to[]:25: Connection refused)
Nov 1 15:32:47 protection postfix/qmgr[705]: 37CE4BC1844: removed

Connection refused[]:25: Connection refused)
This just says that does not listen on port 25, and that your PMG tries to deliver the mail for '' to that IP
if is a domain you want to accept mail for - then you need to add an entry in Transport (where does mail for belong to)
if is an external domain your users want to send mail to - then either your DNS-system has a problem, or is not configured correctly or the mailserver for is down.

Since the mail is handed to the external port of pmg-smtp-filter I would assume one of the last two reasons

I hope this helps!
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Reactions: killmasta93
would also disable spf and greylisting, as what @Stoiko Ivanov ivan says verify that its using DNS internally and not externally ( as for the transports would be your email server and the port of your email server which normally is 25 depends if your running postfix you can check in the


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