Security Basics mailing list archives

Re: virus mail ignores MX?


From: die tuere <reitenba () fh-brandenburg de>
Date: Mon, 14 Jun 2004 09:21:44 +0200

On Friday 11 June 2004 10:41, Monty Ree wrote:
Hello, all.

I have some question about virus mail.
I have set viruswall about my domain and all mails should be sent first to
viruswall.

xxxxx.com.               86400   IN      MX      0 viruswall.xxxxx.com. <--
viruswall
xxxxx.com.               86400   IN      MX      5 mail.xxxxx.com     <--
mail server

When I see virus mail header, like below.

Received: from test.com ([211.117.47.1])
      by mail.xxxxx.com (8.11.6/8.11.6) with ESMTP id i5B8DdW02504
      for <chulmin2 () xxxxx com>; Fri, 11 Jun 2004 17:13:44 +0900

some virus mails are filtered well at viruswall.
but other virus mails are not get through viruswall,
and go directly to mail.xxxxx.com. I think.

so I think some virus mail ignores MX, right?

What's the problem and how can I solve this problem?


Thanks in advance.
hi monty,

yes viruses and spammers are (partliy) ignoring your dns mx record. i learned 
it myself some weeks ago as i installed an openbsd with spamd installed in 
front of the first mail server. it didn't helped worked ether. spam and 
viruses took the secondary server. so you should deploy your solution on any 
of your mail servers.

buzz

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