Josef Karliak:
> Good afternoon,
>
> thanks for the answer.
>
> smtp1 and smtp2 are the servers in the same subnet (demil zone,
> perimeter). Client is from local network
>
> In the mail log of smtp2 is only difference (except different client
> IP) that the DSN is generated.
>
> All communication is over TCP/25 (SMTPS/STARTTLS)
>
> No DSN:
>
> grep C89BB80006 /var/log/mail
> May 5 06:42:20 smtp2 postfix/smtpd[31440]: C89BB80006:
> client=unknown[192.168.0.2]
> May 5 06:42:20 smtp2 postfix/cleanup[30664]: C89BB80006:
> message-id=<!&!AAAAAAAAAAAuAAAAAAAAACcuY6gLH5tCotu36NkrzCsBANlTnCJhprtFudq2LHCBs8EBACQA//8AABAAAAA38fBQL08cT7+pBCC+FwbCAQAAAAA=@domain.cz>
> May 5 06:42:20 smtp2 opendkim[2015]: C89BB80006: DKIM-Signature field
> added (s=mail, d=domain.cz)
> May 5 06:42:20 smtp2 postfix/qmgr[2287]: C89BB80006:
> from=<sen...@domain.cz>, size=2674, nrcpt=1 (queue active)
> May 5 06:42:20 smtp2 postfix/pipe[28601]: C89BB80006:
> to=<r...@domain.cz>, relay=spamassassin, delay=0.17,
> delays=0.06/0/0/0.11, dsn=2.0.0, status=sent (delivered via spamassassin
> service)
> May 5 06:42:21 smtp2 postfix/bounce[31734]: C89BB80006: sender delivery
> status notification: E513380009
> May 5 06:42:21 smtp2 postfix/qmgr[2287]: C89BB80006: removed
Above, E513380009 is the delivery status notification message.
> generated DSN:
>
> grep 75F4780005 /var/log/mail
> May 5 08:12:48 smtp2 postfix/smtpd[24244]: 75F4780005:
> client=smtp1.domain.cz[195.1.2.3]
> May 5 08:12:48 smtp2 postfix/cleanup[25484]: 75F4780005:
> message-id=<!&!AAAAAAAAAAAuAAAAAAAAACcuY6gLH5tCotu36NkrzCsBANlTnCJhprtFudq2LHCBs8EBACQA//8AABAAAADrxonahqedRbONTbTYbF2HAQAAAAA=@domain.cz>
> May 5 08:12:48 smtp2 opendkim[2015]: 75F4780005: DKIM-Signature field
> added (s=mail, d=domain.cz)
> May 5 08:12:48 smtp2 opendmarc[1994]: 75F4780005: ignoring mail from
> domain.cz
> May 5 08:12:48 smtp2 postfix/qmgr[2287]: 75F4780005:
> from=<sen...@domain.cz>, size=2984, nrcpt=1 (queue active)
> May 5 08:12:48 smtp2 postfix/pipe[20007]: 75F4780005:
> to=<r...@domain.cz>, relay=spamassassin, delay=0.19,
> delays=0.11/0/0/0.08, dsn=2.0.0, status=sent (delivered via spamassassin
> service)
> May 5 08:12:48 smtp2 postfix/qmgr[2287]: 75F4780005: removed
This logging shows no delivery status notification message.
Wietse
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