There are a lot of blogs/threads/comments on the web that say to create a transport rule or to create a contact. Both of these will not work because autoforward to external domains is disabled (see below)
If you look in the message tracking logs you will find the following line:
To be able to do this for a specific domain only you can do the following:
Check your current settings:
Get-RemoteDomain
Name DomainName AllowedOOFType
---- ---------- --------------
Default * External
Check the auto forward settings:
Get-RemoteDomain | fl autofor*
AutoForwardEnabled : False
Add a new remote domain to allow forwarding to:New-RemoteDomain -Name description -DomainName yourremotedomain.com
Check the auto forward settings for the new domain:
Get-RemoteDomain -Identity yourremotedomain | FL auto* AutoReplyEnabled : True AutoForwardEnabled : True
After doing all this you can create a rule in Outlook or OWA to forward an email to this particular domain only.
