Joe_Budden
asked on
Exchange 2007 NDR's
Hi All
Running Exchange 2007 SP2. We have multiple AD sites, each with their own Hub Transport servers and mailbox servers.
At the moment, if someone emails sdfsfsefse@mydomain.com (i.e. a invalid address within my domain), the sender is sent an NDR.
Does anyone know where it's set what sort of NDR's are sent back to the sender?
Our Security team wants us to look into sending NDR's for some sort of message rejection and not for others. I understand there can be several reasons a message is bounced back - mailbox too full, invalid address etc.
Running Exchange 2007 SP2. We have multiple AD sites, each with their own Hub Transport servers and mailbox servers.
At the moment, if someone emails sdfsfsefse@mydomain.com (i.e. a invalid address within my domain), the sender is sent an NDR.
Does anyone know where it's set what sort of NDR's are sent back to the sender?
Our Security team wants us to look into sending NDR's for some sort of message rejection and not for others. I understand there can be several reasons a message is bounced back - mailbox too full, invalid address etc.
Glen Knight
The NDR's are system generated and used for diagnostics. As far as I am aware there is no way to change them.
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Thanks both.
Our Security team are wondering if it's possible to disable NDR's for when someone external sends to an invalid internal address. I assume this is not possible, unless we disable ALL NDRs, and would also be counter-productive?
Our Security team are wondering if it's possible to disable NDR's for when someone external sends to an invalid internal address. I assume this is not possible, unless we disable ALL NDRs, and would also be counter-productive?
It is possible but not recomended
You can do it with a transport rule
You can do it with a transport rule
ASKER
So you are saying that it IS possible to block some NDR's and not others, via a Transport rule?
It is not exactly a feature fom exchange but you can do it
Do a transport rule along the lines of
Sent from internal orgaization to outside my organization
Where body contains text "some speciffic text from the ndr"
Sikently drop message
Do a transport rule along the lines of
Sent from internal orgaization to outside my organization
Where body contains text "some speciffic text from the ndr"
Sikently drop message