I hope someone can help. I checked the outgoing Queue on our Exchange 5.5 server and there are hundreds of messages with no originator queued up to go out. I assume that somehow something is sending out spam from this server.
Look for the patch that fixes the NDR problem on Exchange. Basically if a spammer sends an email to your server to someone non-existent, your server will try to reply with NDR. But the reply address is bogus also. Your server will keep on trying until it times out in the queue.
Just to confirm, these will show up in the queue continuously. Some of them are getting sent out... i know this because if I highlight one and then click details it will sometimes tell me that it has already been sent. I go in and delete hundreds of these at a time only to have them reappear. This has been going on for a few weeks as far as I know.
so how would you solve the problem when the originator field displays only a "<>" symbol??? i already have sp 4 installed (with exchange 5.5) i've slowed it down, but it still comes up
Have you actually bothered to read the FAQ? In SMTP, system-generated messages have a sender of <>, just in case they can't be delivered. All the non-delivery reports (NDRs) your system is generating are 'from' <>, so that they don't generate an endless loop if the system they're sent to can't deliver them (think about it).
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