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MS Exchange 2003 - Outlook Calendar Events Missing

Microsoft Exchange 2003
SBS 2003

Suddenly today, most users are missing all of their calendar events, past, present and future, and all reminders are gone.

I have a daily backup on tape but I have never restored anything to Exchange before and / or know if that will fix this issue long term.

There are a bunch of active sync errors in the event log being spawned as well.
( I am replacing real server names with xxx )

Error Event ID 3005
Unexpected Exchange mailbox Server error: Server: [xxx.xxxx.xxx] User: [xxx@xxx.com] HTTP status code: [503]. Verify that the Exchange mailbox Server is working correctly.  

Event id 3015
IP-based AUTD failed to initialize because the processing of notifications could not be setup.  Error code [0x80004005].  Verify that no other applications are currently bound to UDP port [2883], or try specifying a different port number.

Event ID 3024
IP-based AUTD failed to initialize.  Error code: [0x80004005].


What is the process?  Tips, suggestions?  Thanks!
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1 Solution
Looks like the ports are in use by other items;
try restarting the server
jkocklerAuthor Commented:
I have restarted, same issue.
Try dismounting the information store, running eseutil /D, and remounting the store
(see this article: http://forums.msexchange.org/m_1800465988/mpage_1/key_/tm.htm#1800466027 )
Also, take a look at this MS article
Hope this helps
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jkocklerAuthor Commented:
I run that from a command prompt?  Kind of a newb here man.. Where are the calendars located in the store?  If all events are missing suddenly today, would you think that restoring a back up from yesterday would bring the calendar events back?  This is more an issue with missing calendars, than it is with active sync from the phones.
jkocklerAuthor Commented:
After second reboot, Active Sync is started successfully and no more errors from it in the event log.

However, there is still data missing from calendars.  
jkocklerAuthor Commented:
I worked out the solution in another thread, since this one seemed to fizzle out on suggestions..  I had to create a recovery storage group and use exmerge.exe to get the calendar back.  Here is the link to the other thread with the solution:

<a href="http://www.experts-exchange.com/viewQuestion.jsp?shareit=GAQb14KQjY5VEZHi42ttDth/VLUtou6LdFghgGhRyP3SHqraLwd9sANaq/KCdHmosAlOsbDAnNI%3D&shared=0&cid=863">Restore Calendar in Exchange 2003</a>

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