Can I give a different CERT for local or remote clients?

[Patrick Horgan]

My issue has to do with supporting our remote users.  They've been told 
to create ssh tunnels for sending email (or any other contact with our 
server).  That means that they send their mail to localhost, but get a 
cert for our fqdn.  Of course we want the cert to have our fqdn because 
other mail servers will relay mail to us for delivery to our domain.  Is 
there any way to make this work?

Patrick