e-mail server for intranet

[Joris Dobbelsteen]

Consider the following:

IMAP, like POP3, is a protocol to access you mailbox.

It will not:
* Transfer e-mails to other mailboxes
* Transfer mails between different systems (except you own mailbox
only).
For this you need SMTP (or another protocol, but SMTP is the most widely
supported). In fact, mail clients (such as Outlook, Thunderbird, ...)
and web mailbox applications (such as squirelmail) will need IMAP (or
POP3) to access the mailbox and SMTP to transfer mail to other
mailboxes.

What you can do is limit delivery within your own domains, prevent
e-mails for leaving the system (to the Internet) and prevent
communication with mail servers except for you own.
It requires some effort, but is very well possible.

- Joris

>-----Original Message-----
>From: ubuntu-users-bounces at lists.ubuntu.com 
>[mailto:ubuntu-users-bounces at lists.ubuntu.com] On Behalf Of 
>Yagnesh Desai
>Sent: vrijdag 5 januari 2007 18:28
>To: ubuntu-users at lists.ubuntu.com
>Subject: e-mail server for intranet
>
>Friends;
>
>I want to start a e-mail service in the intranet.
>It will be closed message service with attachment.
>
>I find that IMAP is what i need and I will also need a php web 
>client for users of linux and windows desktop to use it via 
>web browser.
>
>I specifically do not want the smtp support for this mail users.
>
>Now my specific requirement is that there are already running 
>Novell Groupwise and Lotus Notes mail services in this 
>intranet which are having 2 different domains.
>
>The new email server which I introduce in the internet should 
>be able to send and receive mails to these 2 domains (not via SMTP).
>
>I found Courier IMAP and Cyrus IMAP.
>Firstly what should be my choice for the IMAP server and the php.
>
>Thanks in advance.
>Yagnesh.
>
>
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