Exchange 2003 Email Forwarding to External
Posted on 2014-02-02
For 500 points can someone provide a solution to the issue I have.
I have an Exchange 2003 SP2 Server that is configured to route outgoing external email via a smart host (SMTP2Go) which works fine until I try to place a forward on an internal account to an external email provider.
Fred has an Exchange email account firstname.lastname@example.org and wishes all his email to be placed on forward (copy left in local Exchange) to email@example.com
I've created a contact called "fred external" with an email address of firstname.lastname@example.org and placed a forward in AD Exchange on email@example.com to "fred external" which results in NDR's as below.
There was an SMTP communication problem with the recipient's email server
<mail.mydomain.com #5.5.0 smtp:550 relay refused firstname.lastname@example.org/external IP of Exchange by this user>
SMTP2Go allows external processing of mydomain.com emails and we have no issues sending a new email to email@example.com - just cannot do this using a forward.
I realise this might be seen as relaying (our Exchange server is secure) however there must be a way for the system to allow forwarding of emails from internal to external.
Can anyone help?