[ale] New mail server for ~2500 people

[DJ-Pfulio]

Setup an email gateway for inbound traffic. That small VM can block 95% of the
crap easily using well-known techniques.

Then you can have the real email system be with a little less HW AND more
secure/safe.

For a corporate setup, 1G mailboxes is the common limit. Users will fill it and
demand more storage - ALWAYS.  C-suite gets unlimited mailboxes. Don't want
those guys taking any email with them, if you can avoid it.

Don't allow pop3 in a corporate env.

If you need enterprise calendaring (shared folders/delegation/etc) , you'll want
a packaged solution - something like Zimbra, but that is a whole other sort of pain.

And don't forget the scan for virus inbound AND outbound.

Outlook will talk std protocols, but if anyone is used to Exchange, they will be
unhappy with just email on the server.

I'm completely addicted to Zimbra's server-side filtering, tagging (anything)
which can make virtual folders, shared email folders, calendars, shared address
books, etc. Alas, Zimbra is a hog and the 8.x line brings that to a new level -
beyond anything they've done before.  Had to triple the RAM for the last upgrade
just to keep similar performance. ;(

I've never run Zimbra on RPM-based distros, so can't say anything good/bad about
that.

Please refuse the confidentiality notice as part of this upgrade.
It is a bad joke anyway.



On 06/19/2015 10:11 AM, Lightner, Jeff wrote:
> What would people recommend for this given we'll be using RHEL7 or CentOS7
> most likely.
> 
> I'm thinking Postfix Dovecot Spamassassain
> 
> 
> 1)       Anything else I should install?   Server will only be used for
> email.
> 
> 2)      We'll probably want to use existing active directory accounts for
> authentication.   Any insight on how to incorporate that into a mail server
> would be appreciated.
> 
> 3)      Any ideas on how much space should be provided for that number of
> users (general of course - I don't know specifically what they'll have)?
> 
> 4)      Any ideas on automatic purging of old emails from the server?
> 
> 5)      They want to use a windows based client (likely Outlook and not my
> choice).   Are there any gotchas in using Outlook for a Linux email server?
> Other suggestions for clients on Windows for non-technical users?
> 
> 6)      Anything else you think I should be considering but didn't ask?
> 
> 
> 
> 
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