Urgent assistence - prevent unwanted outgoing email

I Need someone to tell me a quick method of deleting all messages in the outbound queues in Microsoft exchange

I have remote access to an sbs2003 server
two users have compiled an email 'mailing list' of 500 names and have attached a pdf of 1.5mb
I want to kill off/prevent the delivery of these messages.
They stated the sending process yesterday but it is still continuing to send I suspect there is some sort of looping process going on.
I have tried manually deleting the messages from the queues but they continue to refill minutes later
This process is choking the bandwidth and limiting my connectivity to the server


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cpmcomputersAsked:
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Vishal BreedProgram ManagerCommented:
have you restarted SMTP & Routing engine service; unless you restart them; changed won;t take effect.
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Vishal BreedProgram ManagerCommented:
Check the queues from Exchange System Manager - Server - Queues.

Right Click on the queue which has the email getting delivered to internet & select Find Messages - Find all the messages & select Delete(no NDR).
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Vishal BreedProgram ManagerCommented:
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cpmcomputersAuthor Commented:
this is what we are doing but there are 129 queues and as quickly as we delete the messages more new queues are forming
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Vishal BreedProgram ManagerCommented:
There is no option to stop Exchange server from creatig queues.

But if Exchange 2003 SP2 is insalled; block the receiver's domain in receipient Filteriing (from Global Settings - Message Delivery - Properties).

Also you need to select Receipient Filteriing from that server's SMTP Virtual server's property - Geberal - Advanced - Edit - Select "Apply Receipient Filter".

Click on OK - OK - OK. Restart SMTP & Routing Engine Service.

All the best!!!
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cpmcomputersAuthor Commented:
thankd but there are 500 recipient domains here?

I have tried to sender filtering but this has no effect?
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