I'm wanting to consolidate 2 servers, a Samba server and an e-mail server running on the "other" OS. The Samba server has about 50 users with "nologin" as their shell and no home directory. Would I need to change anything with these user accounts to be able to move the e-mail server to Postfix on the same server?

Thanks

Well the no home directory sure does throw a curve into the situation. You could use virtual users for the mailboxes and authenticate them against /etc/passwd (provided that the smbpasswd/unix passwd is synch'd) or you could create the new virtual mail accounts that require separate passwords and build a new auth scheme (PAM/LDAP/bdb/SQL).

My limited understanding of the vmailmgr is that the virtual uses live under the home folder of the virtual domain created for them. Matbe have a look at qmail.org and see what your options are. There's a few guides on using qmail/courier/vmailmgr and I'd suggest you dig through before ou commit to one or the other. One note - courier IMAP does not play nice with PHP; if you use any of the IMAP functionality of PHP then you'll need to do some funky trick with the UW-IMAP source and rebuild the PHP from source.

Just to see if I understand, you are saying that Postfix does require a home directory? There are only 50 or so users using this server, so adding home directories via a short script wouldn't be a problem if needed.

Is access to a shell account required?

Unlike Postfix, qmail does not require a home directory?

Thanks again.

Oh... I thought you didn't want a home directory...

Postfix puts the mail in /var/spool/mail and IMAP users would file the mail (as well as 'sent' and 'trash') in a home directory. qmail skips the /var/spool thing and places iincoming mail into a home dir. I do believe that both postfix and qmail support virtual users.