I think your confused here.... smtp is how email servers talk to each other, and, generally, how users, using email clients (outlook, thunderbird, lotus notes, evolution, etc) send mail, even if it is only as far as your mail server (and not to the rest of the internet) imap, meanwhile, is a protocal for retreiving messages off of the mail server. jsut like pop, is is an access method. with imap, a users client will download mesages, or parts of them while they remain on the email server, allowing a central location of all emails. as far as sending/receiving to/from these other domains, that will depend on your dns setup, and those servers being able to communicate over "standard" methods (smtp), which i can only assume they can do. <div>On 1/5/07, Yagnesh Desai <<a href="mailto:ynd@lntenc.com">ynd@lntenc.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> 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. -- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com </a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </blockquote></div>