Email Redundancy (Currently Running Exchange 2010)
Posted on 2012-08-29
We have a client that has experienced unexpected email downtime twice in the past year. This is a big issue for them (basically the same for any company out there). They've asked us to set up a sort of redundancy system to prevent this from ever happening again.
Currently they are running Exchange 2010 on a single server (recently virtualized and upgraded from Exchange 2003). The first failure they encountered was because of a mailbox store corruption. The most recent however was a massive DNS/AD/Replication issue (EMC/EMS would not connect at all and prevented mail completely). We've since cleaned things up and restored functionality.
We do have a POP email server that we use to host email for a few of our much smaller clients, and are considering setting up all of their users in this system as a backup, however our biggest concern is it only gives them the ability to send/receive email (they obviously would not be able to access calendars, public folders, etc).
The question I'm posing is, is there any way to set up a redundant Exchange 2010 server that can act as a stand alone system regardless of the health of their entire domain (ie: an exchange server that doesn't have to be a part of the actual domain).
Is this something that is possible? I'm open to any suggestions you may have for alternate/similar redundancy options.