Hi,We are using Exchange 2003 SP2 Enterprise and suddenly Many Users complainig thatmail marked to two or more users those not get deliverd to there mailbox if i look in Message tracking it shows that mail get successfully stroed to there mail box but in there mail box mails not appering, we are using Symantec Endpoint protection 11.0.4 and first i though it could be the problem of Antivirus so excluded EDB and STM file for scan but no luck work.Please suggest if anyone having such type of problem or any clue to shortout this issue.

Are the clients in cache or online mode? Do you see the messages via OWA? Any rules moving messages?Outlook Views?Mobile Devices in use?If message tracking shows delivery, then they should be there.On a side note, make sure you are excluding ALL the necesary directories from any flat-file AV scan:http://support.microsoft.com/kb/823166Overview of Exchange Server 2003 and antivirus software

Dear Andy thanks for looking,Please find the below answerDo you see the messages via OWA? --Yeah! but not even there we are able to see mailsAny rules moving messages?---No,Since it is happning many of the usersOutlook Views?--Message viewsMobile Devices in use?--Yeah! all the users who are complaining this issue are mobile users they are using blackberry device and through mail forwarding they got the message..ThanksRakesh

Check under the inbox/Recover Deleted Items and see if those messages are there.If this is Outlook 2003 or older, add the DumpsterAlwaysOn registry key to view those items per:http://technet.microsoft.com/en-us/library/aa997155.aspxAre the BB users using a BES server or BIS or something else?

Hi,Whether any error message come up in the Application event log?Additionally, please check whether theemails arestaying in the Server Failures folder under Sync Issues.http://office.microsoft.com/en-us/outlook/HP101024401033.aspxThanksAllen

Dear Andy,Its not problem with one users many users saying same thing i also check with there deleted Item and even the registery settings u told in thread.but no luck.I dont know about the exactserver whether they are usingBES or BIS but from my exchangeit simply forwarding to there extenal domain e.g/username@airtel.blackberry.com.RegardsRakesh

No i am not getting any error in application log.since they are all using Office 2003 i dont think it could be the issue.regardsrakesh

How is it forwarding those messages?

We created contacts and define the SMTP of BB email addres and enable the forwarding to deliver messages in both the address.regerdsrakesh

One more thing i noticed is that in some of the users properties check box "automatic update email address in based on recipient policy" is not select does this will affect and what is the use of this.