On 03/04/2019 15:25, Wietse Venema wrote:
Giles Coochey:
I think I've checked that already:
# grep? reject_unknown_recipient_domain /etc/postfix/main.cf
#
OK, now try unknown_sender_domain.
Nothing there, but see below!
But perhaps one of these settings causes it?
Or you could end this guessing game, if you can give the full Postfix
logfile record. You may obfuscate domains, hosts, IP addresses, and
users, but not the text that describes the nature of the error.
The point is, out-of-the-box Postfix does not give a hoot about the
sender email address. You configured Postfix to reject the sender,
and you will configure Postfix to stop doing that.
Wietse
Ha! Turns out it is not a postfix problem at all, but looks to be issue
with sendmail... so this is off-topic for this list - I only found this
out when changing smtpd to -vvv in master.cf and found nothing in the
logs on the postfix server when flushing the queues on the sendmail server.
Yet further off-topic, I have
FEATURE(`accept_unresolvable_domains')
Configured for sendmail - but suspect that sendmail still doesn't relay
if the domain is unresolvable. It accepts the message, and would
probably deliver it to a local account, but not relay to another box.
So narrows it down, I last configured this box about 7 years ago, so
wonder whether to replace it with postfix.... I'll take my problem
elsewhere now!
