[Exim] Mysql virtual domains and vacation

Good Afternoon All,

Having successfully implemented a exim/qpopper/mysql virtual user setup, my
client has decided to throw in Out of Office (vacation/whatever) as a nice
after the horse has bolted requirement.

Now, the way I figure that I can do is to write a perl script which Exim
will pass the email too in the form of a transport. That's all well and good
however I was wondering if there was an easier way to do things ?

As said before all my users are virtual, so running vacation is impossible.

Cheers,

Chris