[GRLUG] Exchange Replacement Opportunity

[L. V. Lammert]

Have an opportunity to propose an IMAP server to replace Exchange, .. what
is a good recommendation considering:

 * Security - SPAM/Virus filtering
 * Flexibility - any number of domains or users per domain
 * Maintenance - Web-based UI for normal admin (i.e. SysAdmin not
   required)
 * Compatibility - standard IMAP, of course, .. but is it worthwhile to
   goto a more 'Exchange Compatible' architecture

My initial research had create a big question:

Most of the 'name' systems (e.g. Zimbra, Zentyal), have not realy
security; NONE I have seen will do milter style filtering (i.e. reject
before acceptance any emails from a dynamic IP block).

What are folks using now?

	Thanks!

	Lee