See

http://maps.vix.com/tsi/ar-fix.html

for links to various resources to help secure your mail server
against this kind of abuse, sorted according to what email server
software you run.

David G



On 17 Dec 00, at 8:54, Shawn M. Shea wrote:

> I have Exchange 5.0 and someone is using my exchange server as
> a relay.  Is
> there anything I can do to stop them from using my server?
>
> Hi Tim. One of my clients had this happen the other day. When
> I checked the outbound message queue (the server seemed very
> slow delivering mail) there were close to 5000 messages. Read
> the following from Microsoft and make the required routing changes.
> You should also delete the spam mail in the queue. Run a port
> sniffer to check for open ports, sometimes its a big surprise.
>
> http://support.microsoft.com/support/kb/articles/Q199/6/56.ASP?LN=EN-CA&SD=gn&FR=0
>
> Shawn M. Shea MCP
> IT Account Manager
> Cistel Technology Inc.
> [log in to unmask]
>
>
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