>>>>> "Dominic" == Dominic Raferd <domi...@timedicer.co.uk> writes:
Dominic> On 30 March 2017 at 15:26, John Stoffel <j...@stoffel.org> wrote: Dominic> Hi all, Dominic> We're running postfix-2.6.6-6.el6_5.x86_64 on RHEL 6.6 and running Dominic> into a problem where emails that have been released from our outside Dominic> spam protection company, *.protection.outlook.com, are getting Dominic> rejected with messages like this: Dominic> Mar 26 06:00:56 mailhost postfix/smtpd[2270]: connect from Dominic> mail-sn1nam01lp0113.outbound.protection.outlook.com[207.46.163.113] Dominic> Mar 26 06:00:56 mailhost postfix/smtpd[2270]: 51235A07D1: client= Dominic> mail-sn1nam01lp0113.outbound.protection.outlook.com[207.46.163.113] Dominic> Mar 26 06:00:56 mailhost postfix/cleanup[2279]: 51235A07D1: message-id=< Dominic> 1490445496218.20153408.25880761.5137938...@backend.ttktravelinsider.com> Dominic> Mar 26 06:00:56 mailhost postfix/qmgr[27442]: 51235A07D1: from=< Dominic> ttkpub.nore...@ttktravelinsider.com>, size=40439, nrcpt=1 (queue active) Dominic> Mar 26 06:00:56 mailhost postfix/local[2278]: 51235A07D1: to=< Dominic> saba.shar...@sub.com>, relay=local, delay=0.29, delays=0.28/0/0/0.01, dsn= Dominic> 5.4.6, status=bounced (mail forwarding loop for saba.shar...@sub.com) Dominic> Mar 26 06:00:56 mailhost postfix/bounce[2273]: 51235A07D1: sender Dominic> non-delivery notification: 97DF2A080B Dominic> Mar 26 06:00:56 mailhost postfix/qmgr[27442]: 51235A07D1: removed Dominic> These emails are released by the end user and should be delivered, but are Dominic> getting bounced back. Dominic> How would I go about figuring out if it's really a bogus "Delivered-To: " Dominic> header that's causing this rejection? Dominic> Did you see this earlier thread: http://postfix.1071664.n5.nabble.com/ Dominic> What-is-causing-this-mail-forwarding-loop-bounce-td62199.html ? I have looked at that thread, but I don't have a good answer. I can understand Wietse's comments in there, but I'm trying to also solve this type of problem, and I've posted my postconf -n output, and the logs from my mail host. Of course protection.outlook.com says they're not doing anything special... but I don't believe them. But I can't prove it without keeping a copy of the bounced email somehow. Is there a good way to log the full headers of these emails before they get rejected, so I can at least know what's going on here? Thanks, John
