Re: Exchange 2000 SMTP Access Connection config

  • From: Danny <nocmonkey@xxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 26 Nov 2004 11:03:40 -0500

On Fri, 26 Nov 2004 09:43:19 -0600, Stephan Barr <bdtsb@xxxxxxxxxxxxxxxx> wrote:
> Hey all.
> What's the most effective method of blocking a troublesome domain.
> This particular domain,, spams my server with hundreds
> of infected emails daily.  I use Symantec Mail Security and it's
> catching and deleting them just fine however I just don't want to see
> any email from this domain.   So, on the SMTP Virtual Server I've added
> the domain name to my servers exclusion list. Since reverse lookup is
> required it does seem to task the processor.   Any other methods?   I'm
> using a NetGear FVL 328 VPN firewall.

1) Are you sure the senders From address is not being spoofed?

2) If you are positive it is them, go to and
look up their contact info. Call them to stop. If spam continues,
report them to their ISP, then up-stream provider, etc.

3) Oddly enough they are using Postini as their anti-spam system, so
obviously they are not fans of receiving spam.

4) If your firewall is capable of ACL's and blocking IP addresses,
then make note of the IP address(es) that the spammer is using to send
email from to your email server and block them. However, if they are
spamming you, then they are spamming other people, so report their
activities to their ISP and up-stream ISP if their ISP is ignoring
your requests.


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