personally, i think they need to get rid of either one of those..
it makes things over complicated for the beginning sysadmin!
and personally, i think they should get rid of the standard mailsystem, and let zafara handle mail/groupware
Well, I'm just thinking the opposite, sorry.
The big advantage of the "standard mail system" is that it is... standard :-) which means that you can change components without being attached to proprietary implementation.
This said, I share that one single mail system is better.
How many are using groupware features and how many are using Zentyal with mail but without groupware?
I don't use groupware but I do need mail: going in direction you promote would mean, in my case, to install groupware component in order to use mail... Frankly, if such change occurs, I will just drop Zentyal and go different implementation :-(