Spam bypassing gateway server

Matthew K Bowman mkbowman at
Tue Jan 20 16:23:04 GMT 2004


I had a similar issue here. We had port 25 opened on the mail servers. After
disabling port 25 from the outside it cured the problem.

Now we have 3 mailscanner gateways behind a F5 doing load balancing :)


----- Original Message -----
From: "Chris Kissinger" <chrisk at OS-IT.NET>
Sent: Tuesday, January 20, 2004 11:03 AM
Subject: Spam bypassing gateway server

> Trying to figure out how some spam is totally bypassing the gateway mail
> server and not being scanned by MailScanner. The gateway server is the
> MX record, mail sent from the regular mail server to a local domain still
> goes out and is scanned by the gateway server then delivered.
> On the ones getting through there's no MailScanner headers added, there's
> also no headers from it hitting the gateway server at all. If it was a
> timeout issue shouldn't it at least have the regular mail headers added?
> Any ideas would be great.
> Chris

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