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Exchange 2003 SMTP queue full of strange addresses

I took a look at my virtual SMTP server running on Exchange 2003 /w SP2 and noticed a lot of strange email domain's that are attempting to go out. They seem stuck and say retry.

Is someone trying to use Exchange to spam messages out and they simply get stuck in the queue?

How do I check this to make sure no one can relay out and what is causing all these messages to be stuck in the queue?

Thanks

flyguybob

It could be that, or it could be NDR messages to a spammer that had been sending messages to users (or non-existent users) in your domain.

flyguybob

Sembee's site (http://www.amset.info/exchange) has a lot of good information on anti-spam measures.

john_s99

ASKER

I also notice on a different server, running Exchange 2003 SP2 that valid messages get stuck in the queue.

If I try to stop the smtp server, the smtp service gets hung, i.e. it says stopping and then I have to reboot the server, once I do that all the messages that were in the queue get delivered ok.

Any idea what would be causing the smtp service to hang? Also, when the server restarts the smtp service doesn't start automatically, even thou in the services it is listed as automatic.

I then have to start the smtp service manually then the messages get delivered.

Any idea's on this one?

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Jeffrey Kane - TechSoEasy

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flyguybob

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