Occasionally I am asked to re-deliver an inbound email by logging on to the edge Barracuda spam filter and re-sending it from there. I just did this today for a mailbox homed on our Exchange 2010 SP1 UR2 server and discovered the joys of duplicate detection.
The Technet documention for 2010 SP1 message tracking is empty and links to that for 2007. (http://technet.microsoft.com/en-us/library/bb124375.aspx) I cannot find anything there about duplicate detection, but there is information around the interwebs that describes a pair of registry settings which can be used to tune duplicate detection at: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\<Server Name>\<Private/Public-Guid>\Track Duplicates and HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\<Server Name>\<Private/Public-Guid>\Background Cleanup. The former does not exist on my 2010 server in that location, but does exist at: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersPrivate\Track Duplicates and HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersPublic\Track Duplicates. Is duplicate message detection documented anywhere for 2010? I would hate to loose the re-deliver capability as an occasionally useful tool, though I do realize that in a perfect world it should be unnecessary. (Deleted item retention, archiving, journaling, etc.) Thanks, RS --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist
