jan gestre:
> : host webmail.former.sample[210.21x.xx.xx] said:
> 451 Temporary failure, please try again later. (in reply to DATA command)
Postfix always resends after 451, but it stops when the message
is too old (the default limits are: maximal_queue_lifetime = 5d
and bounce_queue_lifetime
2009/11/23 jan gestre :
> I have a Postfix server behind a gateway firewall that does content
> filtering (SpamD on pfSense) and greylisting and we have an
> application server that uses Postfix as its MTA, the problem is after
> the initial 451 response the latter quits and send an Undeliverable
>
