Shawn P. Garbett wrote:
>>>>{foreign domain} in local_domains? no (end of list)
>
> 250-{foreign IP} Hello {foreign domain name} [{exim relay IP}]
> 250-SIZE
> 250-PIPELINING
> 250 HELP
> AUTH PLAIN {encoded password here}
> 504 PLAIN mechanism not supported
>
> Now same question: Why is AUTH not supported outside the local domain?
Are you sure exim uses the correct configure file? Check it with
exim -bP configure_file