So those log snippets are from the logs on 50.75.172.140 (my postfix
server). What more might I be looking for?
On Wed, 1 Feb 2023, Wietse Venema wrote:
post...@fongaboo.com:
Jan 31 20:06:15 h6lix postfix/smtp[6552]: 7128C4089C:
to=<outsideaddr...@swling.net>, relay=50.75.172.140[50.75.172.140]:25,
delay=2.5, delays=0.64/0.01/1.6/0.23, dsn=4.3.0, status=deferred
(host 50.75.172.140[50.75.172.140] said: 451 4.3.0 Error: queue
file write error (in reply to end of DATA command))
You need to look in the logs on 50.75.172.140. The Postfix SMTP
server returns a generic "write error" without revealing details
in its responses to an SMTP client.
Wietse
