Hi All,I was getting event id 1020 in application log description of the event is as follows ---Event Type: ErrorEvent Source: MSExchange Store DriverEvent Category: MSExchangeStoreDriver Event ID: 1020Date: 1/13/2010Time: 11:26:10 AMUser: N/AComputer: MAILDescription:The store driver couldn't deliver the public folder replication message "Hierarchy (PublicFolderDatabase@XXX.org)" because the following error occurred: MapiExceptionLogonFailed: Unable to make connection to the server. (hr=0x80040111, ec=-2147221231)Diagnostic context: ...... Lid: 28153 EcDoConnectEx exception [rpc_status=0x6BA ][latency=0] Lid: 16280 dwParam: 0x6BA Msg: EEInfo: ComputerName: n/a Lid: 8600 dwParam: 0x6BA Msg: EEInfo: ProcessID: 4864 Lid: 12696 dwParam: 0x6BA Msg: EEInfo: Generation Time: 2010-01-13 17:26:10:423 Lid: 10648 dwParam: 0x6BA Msg: EEInfo: Generating component: 2 Lid: 14744 dwParam: 0x6BA Msg: EEInfo: Status: 1722 Lid: 9624 dwParam: 0x6BA Msg: EEInfo: Detection location: 390 Lid: 13720 dwParam: 0x6BA Msg: EEInfo: Flags: 0 Lid: 11672 dwParam: 0x6BA Msg: EEInfo: NumberOfParameters: 2 Lid: 8856 dwParam: 0x6BA Msg: EEInfo: prm[0]: Unicode string: aadmail2.XXX.org Lid: 8856 dwParam: 0x6BA Msg: EEInfo: prm[1]: Unicode string: AADMAIL Lid: 23065 EcDoConnectEx called [length=176] Lid: 17913 EcDoConnectEx returned [ec=0x80040111][length=56][latency=0] Lid: 19778 Lid: 27970 StoreEc: 0x80040111 Lid: 17730 Lid: 25922 StoreEc: 0x80040111Did lots of troubleshooing but finally got resolved by applying SP2 on the exchange server 2007.Now my question is, what is the reason of getting this event id?* There were no issue on the exchange server, everything was working fine smooth and easy.Any kind of help will be appreciated. Thanks, -GULAB

Looks like this was due to some free busy issue. Pleae check i you were able to share the meeting request.Raj

Hi,What is the exact issue? Do you have any issue about public folder,free/busy? Issues That Are Fixed in Exchange Server 2007 Service Pack 2http://technet.microsoft.com/en-us/library/ee221174(EXCHG.80).aspx Regards,Xiu<!---->