Hi
I have an issue where
* A client sends an email to a remote server
* and cc's a copy to someone else
under these circumstance I get:
delivery 3555: deferral:
<ip>_does_not_like_recipient./Remote_host_said:_451_relay_not_permitted!/Giving_up_on_<ip>./
it does eventually go through but the delay is several hours
* If I test without the CC it goes through straight away
* The CC'ed mail is delivered staright away
* it only affects this server
Their server has a signature if this helps:
* signature spamexpert-2.servers.netregistry.net ESMTP Exim
20200825.1020 Thu, 03 Sep 2020 06:57:02 +0300
Cheers
David Bray
e. [email protected]
