[Sunhelp] sendmail question

[dhansen at zebra.net]

This isn't quite a Solaris specific question (except that I'm running
 Solaris). But does anyone know how to configure sendmail so that
 the username on outgoing email can be changed per user? And also is there a
 setting to change the hostname per user as well? (I've changed the 
 DJ line to match one email host but I'm collecting mail from various
 accounts to my dialup local box and would like to just be able to
 reply back from those "invalid" usernames in such a way that it appears
 to be coming from the accounts the email was originally sent to.

 i.e.- Current setup has all outgoing mail being sent as localuser at isp.net
   instead of localuser at dialupstuff.isp.net as a result of having DJisp.net
   in the sendmail.cf. But what I would like to be able to do is have email
   sent out as remoteuser1 at appropriate.host.net instead of localuser1 at isp.net.
   And so on for the various accounts.

david