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troubleshooting Question

NDR spam on exchange 2003

MARKWILKYFlag for United Kingdom of Great Britain and Northern Ireland asked on
ExchangeEmail Protocols
21 Comments1 Solution730 ViewsLast Modified:

I have a problem with a customer server, I cant stop the exchange queues getting larger and larger.
I think we have been NDR attack.

I have searched internet and tried everything i can find but they still keep coming.

I have checked if open relay, checked al PC and servers for viruses, and also  gone though sembee cleaning up after NDR attach.

I seem to be getting thousand of email in queue every few mins.  I have blocked port 25 and now using a none existing smart host but still getting  lots. I have even ran Microsoft tool -  Exchange Support Tools / Aqadmcli ....... this delete queue but they then starting filling up again, so i ran again but keeps happening

Has anyone any ideas please

Avatar of Alan Hardisty
This problem has been solved!
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