[clug] Debugging mail delivery issues

[jm]

On 19/4/19 10:02, George at Clug via linux wrote:
> Jim,
>
>
> Do you send email from your own email server?  I would have to guess
> so from your below email. 
>
>
Yes.


> Is it a postfix server? 
Yes.
>
>
> Have you turned on verbose logging and checked through the logs to see
> what are the negotiations?
>
>
The mail is first delayed (greylisted) then accepted, (username replaced
with Xs)


Apr 15 12:11:38 draugr2 postfix/smtp[18020]: 40D98722: host
au-smtp-inbound-2.mimecast.com[103.13.69.122] said: 451 Internal
resource temporarily unavailable -
https://community.mimecast.com/docs/DOC-1369#451
[hKw4nx0YPwCzGN6aYwDZ7w.au55] (in reply to RCPT TO command

Apr 15 12:11:42 draugr2 postfix/smtp[18020]: 40D98722:
to=<XXXXXXX at canberra.edu.au>,
relay=au-smtp-inbound-2.mimecast.com[103.13.69.26]:25, delay=11,
delays=1.3/0.02/7.6/1.7, dsn=4.0.0, status=deferred (host
au-smtp-inbound-2.mimecast.com[103.13.69.26] said: 451 Internal resource
temporarily unavailable -
https://community.mimecast.com/docs/DOC-1369#451
[g6XzQ2tbN_aBhCsbVUMvoQ.au67] (in reply to RCPT TO command))


Apr 15 12:20:32 draugr2 postfix/smtp[18099]: 40D98722:
to=<XXXXXXXX at canberra.edu.au>,
relay=au-smtp-inbound-1.mimecast.com[124.47.150.26]:25, delay=541,
delays=536/0.02/2.1/3.3, dsn=2.0.0, status=sent (250
SmtpThread-6776583-1555330832649 at au-mta-32.au.mimecast.lan Received OK
[ND-2IzcDNjuVI6uxDYKv4w.au32])


Jeff.