Sendmail Spam Woes 1

[Albion]

I have a Linux box running Sendmail 8.13.1 and a Windows 2003 server running Exchange 2003. Mail comes into my Linux box and is relayed behind my NAT into my Exchange server. It seems that a lot of email (At times tens of thousands, no exaggeration) is getting backed up into the /var/spool/mqueue directory on my sendmail server. When I look at these emails I notice that most if not all of them are to e-mail addresses that do not exist on my exchange server (spam). Is there a way in Sendmail or Exchange to immediately bounce these emails back to the sender when they arrive instead of letting them sit in the queue waiting for whatever?

Thanks

-Al

 

[RhythmAce]

Are you doing anything now to filter spam?

 

[Albion]

I am using Trend Micro to filter my spam but that's on the Exchange server. The problem I am having is that a lot of the spam to unknown e-mail addresses is getting bunged up on my Sendmail relay. I was hoping there was some way to just immediately bounce unknown e-mail addresses at the relay.

Thanks

-Al

 

[pulsar1]

You could modify sendmail.cf to do the Trend lookup instead of the Exchange server. This way you will dump the spam before it is passed to along.

 

[stfaprc]

This may be what you want:

http://www.snertsoft.com/sendmail/milter-ahead/

 

[gb0mb]

Is the pile up because the sendmail relay is holding failed delivery attempts for X hours as a default? That might be configurable.

Gb0mb

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