So I've been looking into setting up a system similar to Gmail, HotMail and etc... and was wondering where I could start. I don't intend in having a lot of accounts and simply want to setup a mail server.
I'm also looking forward to setting up a mail server, but I haven't done it yet. I haven't researched a lot either, but of what I've seen so far, I'm leaning towards Zimbra, it has an open source edition with coll mail features. Check it out in zimbra.com
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I probably shouldn't post it, but I am going to anyway. I thought about starting a mail hosting business. I'm not sure how secure it is, or how good it is long-term but http://www.hivemail.com has a good looking mail control panel. I'm going to look into those open source ones you guys posted though...
I looked at HiveMail and is pretty interesting and geared more towards what I need.
The best thing I like about HiveMail is the ability to add outside pop3 accounts into the system, and the calendar. If you know PHP, or plan on learning it extensively I would almost bet you could add all kinds of features to it, and it seems like it's actively being developed.
If you are starting a mail hosting business just saying be prepared for these people who want to spam the heck outta hotmail, gmail, yahoo...
Zimbra looks interesting but too bad it doesn't support Cent OS5.
It's not listed as a supported platform, but the RedHat downloads will work on CentOS without any issues.
They also have a bugzilla enhancement request to make CentOS a supported platform. But the RedHat download will work on CentOS out-of-the-box.
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