Your question requires long explanations which are quite difficult to come by on this forum! Maybe someone else has more time on their hands, but I would suggest that you use the very excellent Ubuntu forums and
Ubuntu wiki for howto's and guides on the task of setting up a mail server.
You will have to configure at least postfix and IMAP (as well as either sieve or procmail) to get a working IMAP server. I would recommend Dovecot (in the Ubuntu repositories) as a good quality, easily configured IMAP server. See this wiki article for installation & configuration of Dovecot. The article seems to be for 6.10 but should work for 7.04 too. Just be sure that you actually want IMAP and not POP3 - the article contains links to wikipedia explanations of the pros and cons of both. Another suggestion: when you have to choose what kind of mailbox you want your mailserver to use, choose ‘maildir’.
As for eGroupWare, do you have it working (everything except IMAP & SMTP?)
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I have eGroupware working, just i can’t send or receive any mail at all. I just want to deliver mail locally, not to some public domains, just on my LAN, on my private domain. I don’t care if it would be IMAP or POP3, i just want it to work in web browser. I just dont know which way to go, what to setup first. Or is it just enugh to ‘pull’ eGroupware from Feisty repos and let the autoinstall install everything? Sorry for the longer post, but since im new to this, i’m eager to learn.
Tnx again !!!
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OK, it seems you’ve already installed eGroupWare from the repos - that’s great. Just remember that when you install eGW (eGroupWare) from the repos or from source or via svn, or whatever, it does not install an IMAP or POP mailserver! What it does is install the FelaMiMail browser-based mail client which can retrieve mail via IMAP or POP3. You have to configure FelaMiMail to connect to either of those.
Its easiest to get the connection settings from your ISP or mail host provider and simply enter them in FelaMiMail’s ‘Manage Emailaccounts’ window. But it sounds like you want your own local mailserver - eGW won’t give you that - you have to set that up yourself (see the links I posted before).
Good Luck!