Stop Sendmail from bouncing unknown user?

[Stewart M. Ives]

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Brian,

I'm no expert on sendmail but this might work for you.

In the sendmail.mc file I have put the following:

dnl # The following will route all mis-addressed mail to xxxxbad
dnl # account and NOT return a user unknown msg. Started 20041024
define(`LUSER_RELAY',`local:xxxxbad')

So far it has worked and routed all such mail to the account "xxxxbad".

Don't foget to create such an account.  Name it what ever you like.

I go into this account every once in a while and delete all the mail out of
it.

Don't forget to regen your sendmail.cf file after you change the .mc file.

Hope this helps.

stew

---------- Original Message -----------
From: Brian Lewis <test at NEXTMILL.NET>
To: MAILSCANNER at JISCMAIL.AC.UK
Sent: Wed, 5 Jan 2005 06:46:33 +0000
Subject: Stop Sendmail from bouncing unknown user?

> I would like to configure Sendmail outgoing to not generate a 'bounce
> reply' if the target user is 'unknown or invalid'.  Basically if Sendmail
> Outgoing is unable to deliver it then it should keep attempting to
> deliver, but if its told by the receiving server the user doesn't exist
> then I don't want it to reply back to the spammer that it doesn't
> exist, instead it should just discard the email.  Anyone know if
> Sendmail can be configured in this way?  Sick of seeing the server
> attempt to delivery thousands of invalid or unknown user replies
> usually to invalid FROM addresses.
>
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