[svlug] Can't Receive

[Rick Moen]

Ivan Sergio Borgonovo

>> 550, not 544.  I have no idea where I thought I saw 544, sorry!
> 
> I have a pretty old line in my fetchmail config that says
> ## postfix
>     antispam 450,501,504,554;
> 
>     that could possibly explain your memory hiccup.

SMTP response code 544 (rare) is a rejection by the remote MTA of the
provided MAIL FROM or RCPT TO text on any of various grounds:  the address in
MAIL FROM appearing to have insufficient submission rights, or being
invalid, or not being authorised with the authentication used; or the address
in a RCPT TO command being inconsistent with the permissions given to the
user; or the message data being rejected based on the submitting user.  (And
no, that is not from memory.  Thank god.)

But I can solve that mystery:  I _did_ get a 544 - on an immediately prior
attempt at a manual SMTP session using /usr/bin/telnet, one where I flubbed
the syntax of the MAIL FROM or RCPT TO command because I hadn't done it in a
while and mistyped it.  And it had been a long day and I was sleepy.