Stop Sendmail from bouncing unknown user?

[Shortt, Kevin]

Two options that I know of...

1.
    I had the same problem and I ended up syncing up my virtualuser table to
all servers and routing all email via usertables (not SMARTHOST). If the
user does not exist, it will repy with "no such user" immediately.

This is done in the virtualusertable with an entry like so..

@domain.com               error:nouser No such user

This stops all inbound connections to an invalid user during the SMTP
connection.
No NDR is generated. I have nice clean mailq's.

2. implement milter's and use milter-ahead
   http://www.milter.info/milter-ahead/index.shtml


-k




----Original Message----
From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On
Behalf Of Brian Lewis Sent: Wednesday, January 05, 2005 11:29 AM
To: MAILSCANNER at JISCMAIL.AC.UK
Subject: Re: Stop Sendmail from bouncing unknown user?

> Unfortunately I believe this feature is for incoming email.  I need
> it to
> not generate a reply back to the sender when it attempts to deliver a
> queue item to another server that says the user is unknown or doesn't
> exist.
>
> I run a few mailscanners for a bunch of domains, the scanners then
> use a
> table in sendmail to redirect all clean domain email to the correct
> mail
> server for that domain. Unfortunately this means the server accepts
> all
> email for a particular domain name no matter what, and if it scores
> low
> enough to not be deleted it is sent to the real mailserver handling
> that
> domain email, which in turn refuses the email message, causing the
> scanner
> to have to generate and attempt to send an undeliverable email to the
> sender.  I'd like to stop that behavior
>
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