On 23 May 2013, at 13:51, LuKreme wrote:
On 22 May 2013, at 07:07 , "Bill Cole"
<postfixlists-070...@billmail.scconsult.com> wrote:
On 22 May 2013, at 7:36, LuKreme wrote:
May 21 14:29:35 mail postfix/cleanup[81455]: 27FC0118B7AF:
message-id=<20130521202935.27fc0118b...@mail.covisp.net>
May 21 14:29:35 mail postfix/bounce[81551]: 3F635118B777: sender
non-delivery notification: 27FC0118B7AF
27FC0118B7AF has a null envelope sender because it is a bounce of
3F635118B777. See the 2nd line?
Yes, I see that *now*. Thanks. I think I was tunnel-visioned on the
end of the line.
Seems like a backscatter problem. The log should have lines about why
27FC0118B7AF was asynchronously bounced which will expose the root
cause.
After looking up the original email I see this is a account that
forwards mail to a gmail account, and gmail rejected the forwarded
mail because it was spam.
/var/log/maillog.1.bz2:May 21 14:29:31 mail postfix/smtp[81526]:
3F635118B777: to=<*munged*@gmail.com>, orig_to=<*munged*>,
relay=gmail-smtp-in.l.google.com[74.125.142.26]:25, delay=1.1,
delays=0.26/0.05/0.39/0.45, dsn=5.7.1, status=bounced (host
gmail-smtp-in.l.google.com[74.125.142.26] said: 550-5.7.1
[75.148.117.91 12] Our system has detected that this message is
550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent
to Gmail, 550-5.7.1 this message has been blocked. Please visit
550-5.7.1
http://support.google.com/mail/bin/answer.py?hl=en&answer=188131 for
550 5.7.1 more information. cl1si4050394igc.54 - gsmtp (in reply to
end of DATA command))
Short of not forwarding to gmail, anything I can do so that this
results in dropping the mail (the 'wrong' thing) instead of trying to
generate the appropriate bounce (the 'right' thing)?
I think you could use sender_dependent_default_transport_maps to route
bounces to a smtpd that uses nested_header_checks (ewww) to discard
messages bearing the fingerprint of being the result of a forwarding
attempt, such as a Delivered-To header containing a local mailbox.
Implementation details are left as an exercise for the reader
(bwahahaha...) Note that I have not done the exercise myself, so
consider this a hand-wave in what seems to be the right direction,
nothing more.
