If you create a mailbox, you can set up a rule in it to delete every e-mail as soon as any e-mail arrives to it. That way it will not be filled with NDRs. However, the Transport Rule should have worked... How did you create it (conditions, actions, etc.)?http://LetsExchange.blogspot.com

Yep. Nuno' right. An inbox rule needs to be put there.

@James : if i created a mailbox, it would be filled quicklyyyyyy with NDRs @Shun100 : Transport rules didnt work.it empties everything but it allows NDRs to pass by. ammarhasayen

If you create a mailbox, you can set up a rule in it to delete every e-mail as soon as any e-mail arrives to it. That way it will not be filled with NDRs. However, the Transport Rule should have worked... How did you create it (conditions, actions, etc.)?http://LetsExchange.blogspot.com

Yep. Nuno' right. An inbox rule needs to be put there.

Hi everyone, I have the following problem : " We have locally developed application that sends emails to internal and external receipients using the sender address noreply@contoso.com. Since we have some distribution groups with restricted senders, our internal application cannot send emails to those group. To solve this, we created an email contact with noreply@contoso.com and we added that contact to the restricted distribution group allow list. The issue that rise here, is that when our internal developed app send emails to unreacbale address, the NDRs to noreply@contoso.com accumulates in our HUB server with error "loop detected" I dontk know how to solve this issue ammarhasayen

Could you create noreply@contoso.com as a mailbox? See if the issue still appears.

If it is E2K7 and above, you might create a Transport Rule to silently drop the email message sent to noreply@contoso.com