[Sysadmins] suggestions for (moderately) large mail server setup

Jerry Horgan jhorgan at tssg.org
Tue Nov 17 17:52:04 GMT 2009


We are currently using UW IMAP (Maildir) + Postfix + OpenLDAP with Squirrelmail for web access.

It works pretty well, but isn't pretty or hugely functional, no calendar or address book. 

So we are now looking at SUN's Java Communication Suite,

It integrates, Email, IM, Calendar, Addressbook. Has a nice AJAX front-end for web-access. Support for push email etc.
Its also designed to scale massively.

You can use it for free or pay for support. 
As were are an Edu institution the price per seat inc support is only a few euro.

We've demoed the web-based frontend and are very happy, you can setup vacation messages, implement procmail rules, multi-domain support etc.
It will also hand off emails to an AV / Spam filter before delivery etc.

It is a complex system, which has slowed up our deployment of it, but it is ultimately designed to fully integrate all the above mentioned components.



On 17 Nov 2009, at 16:10, Gavin McCullagh wrote:

> Hi,
> among my current tasks at the moment is a mail server upgrade.  I'm looking
> for advice, suggestions, experiences, links to reviews or whatever.
> We have until now been using a very early version of Kolab which, though it
> had some wrinkles, has broadly met requirements up to now.  It basically
> integrates Cyrus, Postfix and OpenLDAP with a PHP management front-end.
> We want to provide shared calendaring now and ideally shared contacts.
> We've a webmail frontend in place (Roundcube) which is up for review too.
> We're looking at 500-1000 users.
> There are a lot of options.  I'd like to think I can separate the decision
> on the back-end from that of the front-end but that's only true to a
> limited degree.  Our users use a mixture of Outlook, Thunderbird and
> Webmail for their email clients.  All of those should play (relatively)
> well with any mail server.  Options for the email back-end seem to include:
> - Kolab2 (openldap, postfix, cyrus)
> - A la carte... ($IMAP + $SMTP + OpenLDAP)
> - Apple XServer (openldap, dovecot, calendarserver, squirrelmail)
> - Exchange (we've more experience of and prefer administering Linux and are
>   fans of interoperability so this is not high on the list but never say
>   never...)
> Calendaring isn't quite so standardised yet and not every web-based
> mail/calendaring solution seems to work with every server.  Calendar
> servers include:
> 	http://caldav.calconnect.org/implementations/servers.html
> CardDAV seems to be a way to do shared contacts, though perhaps not so well
> developed as yet.
> 	http://carddav.calconnect.org/implementations/servers.html
> There are quite a number of web front-ends (Horde, eGroupware,
> Squirrelmail, Roundcube, OpenGroupware, ScalableOgo,...) which can be
> bolted onto all of this and some of the backends come with a front-end.
> If anyone has the perfect CalDAV/CardDav/IMAP/Webmail/... setup that does
> everything you ever want without being a pain in other ways I'd dearly love
> to hear about it :-)
> Sorry for the long email.  All ideas appreciated.
> Gavin
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