Users
Before creating a user a domain must be created Domains
Add a user to newdomain.com
/home/vpopmail/bin/vadduser newuser@newdomain.com -q NOQUOTA pwnewuser
This command creates the virtual user "newuser@newdomain.com" with no mailbox quota and password "pwnewuser".
Modify a user:
/home/vpopmail/bin/vmoduser
This command without command-line arguments will show arguments to modify the user
Change user's password
/home/vpopmail/vpasswd newuser@newdomain.com newpwnewuser
This command changes the virtual user, "newuser@newdomain.com"'s, password to "newpwnewuser"