Greetings, Checking my notes, I see I never responded on resolution - sorry.
I made the changes per the TIDs I noted in the post, and now all calendar items are preserved moving forward. Thanks for your help. Dana From: [email protected] [mailto:[email protected]] On Behalf Of Michael B. Smith Sent: Monday, May 12, 2014 9:21 PM To: [email protected] Subject: [Exchange] RE: Calendar and Tasks Retention - changed in SP2 U4 MS did not set the default to zero because there were SO MANY complaints about this not working as it had before, with MRM 1.0 (Exchange 2007), and Exchange 2000/2003 mailbox policies. What you saw in early Exchange 2010 was an aberration. From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of xyz Sent: Friday, May 9, 2014 9:27 PM To: [email protected]<mailto:[email protected]> Subject: [Exchange] Calendar and Tasks Retention - changed in SP2 U4 Greetings, Just a heads up in case anyone runs into this. Exchange 2010 SP3 U3 Outlook 2013 clients History: When we migrated to Exchange 2010 in June 2010, we set 270 day retention tags for all folders in user mailboxes. At the time, we understood that Calendar and Tasks were not subject to retention per MS design and that is what we wanted. In February 2014, we upgraded from Exchange 2010 SP2 u3 to Exchange 2010 SP3 u3 to remain within the MS support matrix. Recently, I noticed user calendar items appear to be deleting after 270 days so did some more digging and found: http://blogs.technet.com/b/exchange/archive/2012/08/14/calendar-and-tasks-retention-tag-support-in-exchange-2010-sp2-ru4.aspx. NOTE: In February 2014, We went directly from Exchange 2010 SP2 u3 to Exchange 2010 SP3 u3, so had never installed Exchange 2010 SP2 u4. >From my read of the link above, Exchange 2010 SP2 u4 (and all later) changed >the default behavior of mailboxes under the 270 day retention to INCLUDE >Calendar and Tasks and that is why older than 270 days are now missing from >all calendars. CLIP from above link: Before You Deploy Exchange 2010 SP2 RU4 Support for Calendar and Tasks in Exchange 2010 SP2 RU4 means you'll need to treat this update rollup differently. If you don't use Retention Policies or if you don't mind Calendar and Tasks items being moved to archive or deleted automatically based on the DPT settings, you can skip the rest of this post. However, if you are concerned about the effects of this new functionality will have on your calendar and task items, you can implement the following temporary workarounds: If you don't want Calendar and Tasks items to ever expire, you can disable the functionality that is included in Exchange 2010 SP2 RU4. Add the following registry key to your Mailbox servers: Path: HKLM\SYSTEM\CurrentControlSet\Services\MSExchangeMailboxAssistants\Parameters Name: ELCAssistantCalendarTaskRetentionEnabled Type: DWORD Value: 0 = Do not process Calendar and Task folders Value: 1 = Process (default with RU4) If you want Calendar and Tasks folders to expire at a different interval than DPTs, you can follow the following steps: 1.Place all mailboxes on Retention Hold 2.Apply Exchange 2010 SP2 RU4 to your Mailbox servers. 3.Create RPTs for Calendar and Tasks folders with the desired retention settings. 4.Inform users about the change. 5.When ready, remove the retention hold from mailboxes. Agreed we and our consultant missed this so stuck with the outcome - and many will not be happy once I report back. Unfortunate that MS did not set the DEFAULT value to 0, but maybe there was a reason. I will now go back and review the registry key method to at least get us back to full Calendar and Tasks unlimited retention (hoping we don't have to change any RPTs to complete this). Just wondering if anyone has run into this or has any newer information for discussion. Thanks for your help. Dana
