Bounces are not sent sometimes.

[Patrik Båt]

Hello list!

I'm having problem with a bounce that was never send to the sender.

Here is the log when it fails:
Jul  2 13:03:05 smtp9 postfix-out/qmgr[5316]: 575C227A388: from=<cust...@domain1.tld>, size=125355, nrcpt=1 (queue active)
Jul  2 13:03:05 smtp9 postfix-out/smtp[8391]: 575C227A388: to=<user...@domain2.tld>, relay=none, delay=0.11, delays=0.01/0/0.1/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=domain2.tld type=AAAA: Host not found)
Jul  2 13:03:05 smtp9 postfix-out/qmgr[5316]: 575C227A388: removed

And here is a log when it works (same rcpt):
Jul  3 10:41:17 smtp9 postfix-out/qmgr[25574]: 1CE9A27A4CB: from=<m...@domain1.tld>, size=8514, nrcpt=1 (queue active)
Jul  3 10:41:17 smtp9 postfix-out/smtp[24245]: 1CE9A27A4CB: to=<user...@domain2.tld>, relay=none, delay=0, delays=0/0/0/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=domain2.tld type=AAAA: Host not found)
Jul  3 10:41:17 smtp9 postfix-out/bounce[11424]: 1CE9A27A4CB: sender non-delivery notification: 1E32427A509
Jul  3 10:41:17 smtp9 postfix-out/qmgr[25574]: 1CE9A27A4CB: removed

Can it somehow be a bug or related somehow to the sender? (there is 2 different senders, but from the same domain)
What I can see, the differences between the emails is the SIZE, one need truncating and the other doesn’t. might that be a problem?

Bounce configuration:
smtp9:~# postconf -c /etc/postfix-outgoing | grep bounce
2bounce_notice_recipient = postmaster
address_verify_sender = $double_bounce_sender
backwards_bounce_logfile_compatibility = yes
bounce_notice_recipient = postmaster
bounce_queue_lifetime = 5d
bounce_service_name = bounce
bounce_size_limit = 50000
bounce_template_file =
disable_verp_bounces = no
double_bounce_sender = double-bounce
lmtp_sasl_auth_soft_bounce = yes
multi_recipient_bounce_reject_code = 550
smtp_sasl_auth_soft_bounce = yes
soft_bounce = no

Im using postfix 2.9.6 from debian wheezy repo:
smtp9:~# dpkg --list | grep postfix
ii  postfix                              2.9.6-2                            amd64        High-performance mail transport agent
ii  postfix-mysql                        2.9.6-2                            amd64        MySQL map support for Postfix
ii  postfix-pcre                         2.9.6-2                            amd64        PCRE map support for Postfix

Any thoughts or ides are welcome!

[Wietse Venema]

Patrik B?t:

> I'm having problem with a bounce that was never send to the sender.
>

> *Here is the log when it fails:*

> Jul 2 13:03:05 smtp9 postfix-out/qmgr[5316]: 575C227A388:
> from=<cust...@domain1.tld>, size=125355, nrcpt=1 (queue active)
> Jul 2 13:03:05 smtp9 postfix-out/smtp[8391]: 575C227A388:
> to=<user...@domain2.tld>, relay=none, delay=0.11, delays=0.01/0/0.1/0,
> dsn=5.4.4, status=bounced (Host or domain name not found. Name service
> error for name=domain2.tld type=AAAA: Host not found)
> Jul 2 13:03:05 smtp9 postfix-out/qmgr[5316]: 575C227A388: removed
>

> *And here is a log when it works (same rcpt):*

This could be because:

0) The sender is <>.

1) The sender sent mail with "RCPT TO: <address> NOTIFY=NONE".

2) You are using a Milter application that adds a recipient with
"NOTIFY=NONE".

2.5) I vaguely recall that old Postfix milter clients always used
"NOTIFY=NONE" when adding a recipient, but I may be mistaken.

3) You are using an older Postfix implementation that always used
"NOTIFY=NONE" when adding a BCC recipient.

Wietse

[Wietse Venema]

Wietse Venema:

4) You are using MailScanner or other software that manipulates
Postfix queue files. This is not supported.

Wietse

[Wietse Venema]

Wietse Venema:

The behavior in 3) exists in all stable Postfix releases. This
is documented behavior.

Wietse

[Patrik Båt]

Hello, Thanks for clearing this out, Wietse!