I have a vps server(centos4.5) where I installed joomla(latest version).
I have a domain . I want to give the joomla user a email id.
For example my domain is demo com . if someone registered by joomla with id user01 he will get user01 at [url removed, login to view] email id automatically . I donot have any mail and webmail setup . its upto you which fits better you can install it. But the mail server must use mysql as it reads the joomla username&password.
Another thing , during registration the user donot need to enter the domain name..it will be added in backend .So also
when they login in joomla they also donot use the domain name ..only there id(i.e user01) not user01 at demodotcom. It is also true for webmail there they also need to use only the id (user01) instead of full email id.
if there is saparate login for joomla&mail ...no problem .
but the user table should be same for joomla&mail also
the domain will add at backend (transparent to user,as I discribed above) .
Hope it is clear.