[Dovecot] Authentication feature I need

[Marc Perkel]

OK - here's whay I need to make it work for my Linuxconf compatible 
authentication system. First - a question:

Will this work? I can find docs on "virtualfile.

auth virtualfile {
  mechanisms = plain digest-md5
  userdb = passwd-file /etc/vmail/passwd.%d
  passdb = passwd-file /etc/vmail/shadow.%d
  user = root
}

Then - since the dmain name selects the passwd file, if there were a 
feature to make %n be us user instead of the whole email address then I 
have what I need.

Password files are placed in the /etc/vmail directory as follows:

/etc/vmail/passwd.domain1
/etc/vmail/shadow.domain1
/etc/vmail/passwd.domain2
/etc/vmail/shadow.domain2

The password and shadow files are exactly the same format as the
/etc/password and /etc/shadow files. The user name within the files
would be the %n part of the email address passed to authenticate
with.

Basically the password file names are /etc/vmail/passwd.%d with the
user withing the file being %n.

marc:x:40000:12:Marc Perkel:/vhome/perkel.com/home/marc:/bin/false
test:x:40001:12::/vhome/perkel.com/home/test:/bin/false
dd:x:40002:12:Atia:/vhome/perkel.com/home/dd:/bin/false
test2:x:40003:12::/vhome/perkel.com/home/test2:/bin/false