@Chege, I am not mkali per se. I just wanted you to broaden your mind, otherwise you expect guys to reproduce google content:-)
You should sit down and dedicate some time to research on the subject matter, then come up with a list of them - from amongst which you intend to choose, based on the features you'd like, and MOST importantly your understanding of the same. What guys have tried....and are proud of does not matter because they will not be running yours for you. The best way to learn is DIY then consult with guys on the shortcomings you face for possible assistance.
From where I sit, there is nothing like open source "mailserver" - it's a new vocabulary you created, which is not even in any dictionary. A mail "server" consists of several components glued together to, basically, _handle_ mail - and you need to understand what that "handling" equates to:). It can be broadly categorized into SMTP, POP3 and IMAP protocols - which is where you need to start, then build upon your knowledge to choose the engines you can use.

Sawa sawa??


On 12 June 2013 19:48, Chege <compulinekenya@gmail.com> wrote:
Thanks  James,Geofrey  and  Brian ....Wash   usiwe mkali  kilasaa...was  asking   for  opinions on what  guys  have tried... and   are proud  of.


On Tue, Jun 11, 2013 at 4:56 PM, Brian Ngure <brian@pixie.co.ke> wrote:
Postfix


On Tue, Jun 11, 2013 at 4:37 PM, geoffrey gitagia <ggitagia@gmail.com> wrote:
look for group ware products , you will love the integration thats already done in most , just google group ware and open the first wikipedea link , they will have the listed group ware products there , but am researching on Tiki ..has all i want 


On Tue, Jun 11, 2013 at 3:19 PM, Odhiambo Washington <odhiambo@gmail.com> wrote:
Boy, you gotta read. Google will give you more answers than we can give here:-)


On 11 June 2013 15:03, Chege <compulinekenya@gmail.com> wrote:
Hii All,
any one with an idea of the  above need to test it  with  my public  ip

rgds

Chege
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