Linked by Alex Chejlyk on Mon 18th Jul 2005 17:09 UTC
Internet & Networking Microsoft dropped support for Exchange 5.5 on December 31st, 2004. Exchange 5.5 users can upgrade to Exchange Server 2003, continue to run 5.5 with all accompanied security risks, or switch over to another mail/groupware system.In this article I propose a fourth option that is really options two (run Exchange) and three (run another mail system) combined.
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other exchange replacements...
by nathan_c on Mon 18th Jul 2005 18:39 UTC
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It seems that, by the time you get this going, you would have been better off to have just implemented one of the many Exchange drop-in replacements that run on Linux and that way you would be totally free from Exchange - especially an old and unsupported version.

The problem with this solution is that it really limits that length of time you can run this configuration without ditching Exchange completely. It also severely limits the scalability of the system (although, if the company isn't growing, then that's not too much of a problem).

However, it's probably a good start to moving away from Exchange if you are the type that doesn't like really large cutovers and prefers a step by step approach to migrations.

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