e-mail relaying without forwarding the entire message?

[Charles Swiger]

On Mar 23, 2006, at 10:28 AM, Steve Camp wrote:
> The conversation that I envision would look something like:
>
>     -> MAIL FROM: <sender at somedomain.com>
>     <- 250 2.1.0 Sender ok
>     -> RCPT TO: <recipient at otherdomain.com>
>     <- XYZ X.W.V Go See someotherserver.otherdomain.com for  
> <recipient at otherdomain.com>
>
> Is such a redirection possible?
> Is it hard to configure?

Yes, it's possible, and no, it's fairly easy to configure.  You want:

FEATURE(redirect)

...if using sendmail, which does:

redirect        Reject all mail addressed to "address.REDIRECT" with
                 a ``551 User has moved; please try <address>'' message.
                 If this is set, you can alias people who have left
                 to their new address with ".REDIRECT" appended.

-- 
-Chuck