On 18/03/2021 10:36, Burn Zero wrote:
I have a relay server named smtprelayservername which accepts emails
from various clients. So one of the clients complain that they receive
this error while sending email:
Error 4.4.2 <smtprelayservername> Error: timeout exceeded
But I have checked in the relay server smtprelayservername and no such
timeout issue is logged.
Please guide me how to tackle such timeout issues.
PS: the problematic client sends 1000's of emails and are delivered
properly to this relay server but the timeout issue occurs only
sometime and is not reproducible.
Do you have AV or spam-filtering running as milter? If so:
- milter_command_timeout has a default of 30s, you could increase it; or
- (less easy) reconfigure your AV/spam-filtering to run as post-queue
content-filter.
