[cobalt-users] Message on email

["Paul Warner" <pwarner@xxxxxxxxxxxxxxxxxx>]

I have a company that is switching to a new domain.  I will be hosting both
on the same Raq4.  All email users are POP clients.  I need to change
user@xxxxxxxxxxx to user@xxxxxxxxxxx and enable forwarding to the new
account, as well as sending a message for the sender to please update their
address book.  One possibility I have devised is to leave user@xxxxxxxxxxx
and add a vacation message and enable forwarding to a 'temporary' account on
domain2.com.  After 6 months or so, come back and delete the account on
domain1.com and re-create it one domain2.com then re-configure the user to
look at user@xxxxxxxxxxxx  Seems like the long way around the mountain!  Is
there a way to generate a response mail when mail is sent to an alias?
There are only about 20 users, so I would probably prefer to make a separate
personalized message for each.  Any other ways to skin this cat?

Thanks in advance!

-- Paul