Hi Dominic
Yes, that was my first thought, but they claim our servers wasn't in bad
standing in any way, and that it must be on our end. When it gets to be a blame
game, logging is gold :-)
Den onsdag den 17. oktober 2018 14.29.06 CEST skrev Dominic Raferd
<domi...@timedicer.co.uk>:
On Wed, 17 Oct 2018 at 12:27, K F <fribse2...@yahoo.dk> wrote:
... What we've seen is some recipients sort of 'goes dark', and they just
timeout on the SMTP connection, and the troubling for us is that it's not
'small companies' that does this.... But all of the sudden the problem
disappears, sometime after we contact the recipient company, and ask if they
have problems.
Could be their servers are banning your servers for a time e.g. fail2ban? Is it
possible some of your users are sending what gets classed as spam, or to
non-existent recipients?
