Exchange 2k3 SMTP Connectors

I recently installed a Win 2k3 Small Busines Server for a client.  I keep finding SMTP connectors in the queues that I don't know where they come from and are obviously not legitimate outgoing e-mail.  I have tested for an open relay and found that it is not an open relay, I had this problem before and have learned how to lock it down fairly well.  I need to find out where these SMTP connectors are coming from.  All of the messages are from postmaster@***.com - does this mean these are auto responses from my email server to bogus incoming mail?  We have several e-mail domain names coming in and the badmail file fills up quickly, so I know there is a ton of spam coming through....  Please let me know how to turn off the autoresponder, if that is what it is, or am I a victim of a trojan horse or backdoor spammer?
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IsigowConnect With a Mentor Commented:
Most likely you want to disable NDR's from your server outgoing

Open Exchange System Manager->Internet Message Format->Right side (usually Default *)
Right click->Properties->advanced->make sure 'allow Non delivery report' is not checked


P.S. this is as you said (or sounds like it) bogus email incomming to things like and if you dont have an info mailbox then the mail just gets sent to your postmaster and an NDR is sent

Note: those instructions are for Ex2k and 2k3 but should work fine for 2k3SBS

Staceman03Author Commented:
Answer has been accepted, I apologize< I got cuahgt up with other things and forgot to accept the answer...thanks Isegow!
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