Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Thanks in advance for any help, this is not a basic mail forwarding question there is in fact a twist.

We are trying to forward mail from an address at our domain to another domain these domains have no kind of trusts or connections.

We set up the basic mail forwarding inside Exchange 2010, using the Recipient Configuration>MailContact>New Mail Contact by creating a new contact pointing to our external destination address.

After this we then change the Delivery Options on the mailbox to forward mail to this contact, it is also set to retain a copy in the local mailbox.

Now when we send a message to it gets to the Exchange account, but it then gets a bounce back of

enter image description here

But the twist is, the message arrives at the destination at but it has the bounce back in the header.

Could this be an Exchange misconfiguration, Bt says its not them. But the bounce back does say its getting rejected by

Thanks Again.

share|improve this question

Error: 550 not permitted

You need to add the sending domain to BT Mail Relay. You might have to call them up.

See a similar discussion here.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.