[BlueOnyx:10794] migrating to another mail server.

[Roy Urick]

We are in the process of doing  a slow migration to another platform and
plan on using our BO box as a relay. 

 

Is there an easy way to forward the emails to another server that would
normally be dropped for "no such user"? We are changing the format of our
email addresses as we migrate, so it seems like the easiest way to go. 
Here is the plan in my head so far. We setup a new mailbox on the other
server as bob.smith@ (with an alias of bsmith) when his old address was
bsmith at . We would .forward his bsmith mailbox to the bob.smith address. When
a message is received at the old server for bob.smith (or any other
nonexistent mailbox) it would be forwarded to the new server (and that
server would determine whether it should be delivered or returned as NSU).
If the message was for bsmith, the .forward would take over and the previous
step would happen.  Then eventually once all of the mailboxes were migrated,
we would change the MX record to the new server and shut down the old. 

Does this seem doable? 

 

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