Open Relay

[letnes]

I have just started working with an SBS 2000 server that is running Exchange 2000. I am having what I think is an open relay problem.

Badmail is filling up and I have a lot of queues. I have tried to follow the instructions from Microsoft "How to block open SMTP relaying and clean up Exchange Server SMTP queues in Windows Small Business Server" article 324958. However, when I try to connect to SMTP using telnet open sbs-IP-address 25 I get a failure to connect message. I have tried to connect to the server using both internal and external computers and get the same result.

I have read that a lot of NDR emails maybe be just a question of being spoofed and not necessarily an open relay.

Is there a setting in Exchange I can make in order to connect to port 25 and carry out the tests?

Thank You.

 

[Marcs41]

Please use the search and Faq's on this site, this subject has been beaton to death!

Marc
_{If 'something' 'somewhere' gives 'some' error, expect random guesses or no replies at all.
Free Tip: The F1 Key does NOT destroy your PC!}

 

[lb63640]

Please see the tutorial at this link:

http://www.msexchange.org/tutorials/MF005.html

It should provide the information you're looking for