On Wed, Aug 04, 2021 at 10:58:26PM +0200, Michael Niedermayer wrote: > On Wed, Aug 04, 2021 at 01:10:00AM +0000, Soft Works wrote: > [...] > > > Would you be able to take a look into the SMTP logs? I have attached an > > image from the case that I recently analyzed. It is comparing two messages > > that were sent at the same time. The left message was received instantly > > but the right message was delayed by an hour. > > The left message was received on 2021-02-20 18:57:54 UTC. > > Most likely there was a delivery attempt for the right message at the same > > time which got rejected. > > The log could probably tell the reason. > > This is from february we have august, logs are not kept that long > > We need a more recent case
Here are some: /var/log/mail.log-Aug 4 18:17:54 ffbox postfix/smtpd[1315236]: connect from mail-wr1-f54.google.com[209.85.221.54] /var/log/mail.log-Aug 4 18:17:59 ffbox postfix/smtpd[1315236]: NOQUEUE: reject: RCPT from mail-wr1-f54.google.com[209.85.221.54]: 450 4.7.1 <ffmpeg-devel@ffmpeg.org>: Recipient address rejected: Please try again later; from=<derek.buitenh...@gmail.com> to=<ffmpeg-devel@ffmpeg.org> proto=ESMTP helo=<mail-wr1-f54.google.com> /var/log/mail.log:Aug 4 18:17:59 ffbox grossd: #f28ef700: a=greylist d=5000 w=1 c=209.85.221.54 s=derek.buitenh...@gmail.com r=ffmpeg-devel@ffmpeg.org h=mail-wr1-f54.google.com m=dnsbl.sorbs.net+1 /var/log/mail.log-Aug 4 18:17:59 ffbox postfix/smtpd[1315236]: disconnect from mail-wr1-f54.google.com[209.85.221.54] ehlo=2 starttls=1 mail=1 rcpt=0/1 bdat=0/1 quit=1 commands=5/7 yes it looks like it is dnsbl & greylisting why am i not surprised it is sorbs ... anyway i removed sorbs from grossd i hope this wont add too much spam to the MLs and ML moderation ques so this should be resolved please tell me if it happens again also if anyone knows other dnsbl lists we can add, please reply, more such lists improve spam filtering thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Awnsering whenever a program halts or runs forever is On a turing machine, in general impossible (turings halting problem). On any real computer, always possible as a real computer has a finite number of states N, and will either halt in less than N cycles or never halt.
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