[Exim] rewrite and vacation

Hi,


I've got a client who is migrating his domain from a domain A
to a domain B.
The exim is just relaying, and is rewriting email toto@A into
toto@B.

Now he wants, when an email is send to the domain A, to do an
autoreply to the sender invinting him to write to the new
domain. The difficulty is that he wantt to receive all emails
disregarding the domain.

I've configured a vacation config for the domain A, but
obviously exim do the rewriting as soon it receives the mail,
so the vacation is never used because Exim only sees mail for
the domain B.


Does someone know how I can tell to exim to apply the
vacation router before rewriting mail adresses, and rewrite
emails adresses after sending the vacation mail ?

thx for your help

David