Why would you not want to send a 451? Here's
two reasons:
1) Why send a 451 back to a broken MTA who's sending you
emails with bare newlines? It's very unlikely that someone
is going to fix their MTA while the email destined to you
is still in the queue so it would get fixed before the
final retry. So switch it to a 553 just to keep the
other MTA from bothering you again.
2) Some broken MTAs like Microsoft's SMTP Service will
ignore that 451 when it is a newline failure and hit your
server as often as the data connection between the two
will allow. On a big pipe, this can really kill your
connection. I have edited my qmail-smtpd.c to replace
the 451 with a 553 for the smtplf issue.
Dave
-----Original Message-----
From: Charles Cazabon
To: [EMAIL PROTECTED]
Sent: 11/3/00 11:20 AM
Subject: Re: Error 451
Tom Laudeman <[EMAIL PROTECTED]> wrote:
> Is there a way to prevent qmail smtp from sending error 451?
Why would you want to? qmail only sends this when it detects an error.
