Recommenation for mail server software (groupware not mta)

Going to be upgrading our mail server in the near future and also moving over our antispam/antivirus onto the same box aswell.
I am looking for suggestions as to what to run on the server for offering webmail, calendar, contacts etc...

The server will be running :-
Cyrus IMAP - Same as existing server and is what I know so can move across mail and settings easier
Postfix - Its what I know and currently use on existing spam filter
Mailscanner with spamassassin and clamav - Current spam filter setup which works very well

I have looked at Horde which looks very good. Also looked at Zimbra but although it looks good it takes over all aspects of the mail handling so we would need to run a virtual machine to handle the spam and antivirus solution we have which is not ideal so I dont think I will be using it.

Any other packages I should take a look at?

We will mostly be using Thunderbird as an email client with some users forced to use Outlook due to using Goldmine.
Any comments on calendar, contacts syncronisation between the client and server would be welcome.
Likewise for any sync between Nokia mobile phones (6800 and E51 mostly) in Thunderbird.

Thanks
LVL 36
grbladesAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Morne LateganCommented:
The only system that gives you everything that you want, in my opinion, after searching for years, is Zimbra. It has its own virus and spam filtering built into it, and also runs postfix underneath, so you'll be able to integrate your current solution into it as well.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
grbladesAuthor Commented:
Yes I could integrate my current spam filtering into it but I would need to customise the postfix install by removing the settings to use amavis and running Mailscanner instead.

Do you know what it uses as the IMAP store though?
I know I can use imapsync but the ability to move across all the settings and permissions would be very usefull.
0
Morne LateganCommented:
It has its own IMAP server written in Java. So your options would be to either use imapsync, or the outlook import wizard.
0
grbladesAuthor Commented:
Ok thanks. I have installed zimbra in a virtual server in order to have a play but it doesnt appear to really support shared folders unless you have them shown under a dummy user and then give access to people.

I think I will stick with Cyrus which has the group folders and permissions that we currently make use of. Unfortunetly that means Zimbra is out of the shortlist.
0
Morne LateganCommented:
If you want to role your own calendar and contacts server, you can look into funambol, which provides synchronization of contacts and calendars between mobile devices as well as several mail clients, including thunderbird and outlook. It won't be groupware, though, but for some it will be enough.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Linux

From novice to tech pro — start learning today.