EXCDO errors

Hi,

I am using exchange 2003 std with sp2 on sbs 2003 server and we are receiving particular errors please help me to resolve this issue:

Error 1:
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Event Type: Error
Event Source: EXCDO
Event Category: General
Event ID: 8199
Date: 7/2/
Time: 1:56:45 PM
User: N/A
Computer: ABCSBS2K3
Description:
Calendaring agent failed in message save notification with error 0×80040219 on user@abc.com: /Calendar/Calendar Item145448.eml.

For more information, click http://www.microsoft.com/contentredirect.asp.

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Error2:

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Event Type: Error
Event Source: EXCDO
Event Category: General
Event ID: 8206
Date: 7/2/
Time: 1:56:45 PM
User: N/A
Computer: ABCSBS2K3
Description:
Calendaring agent failed with error code 0×80040219 while saving appointment.

For more information, click http://www.microsoft.com/contentredirect.asp.
Data:
0000: 48 72 53 61 76 69 6e 67 HrSaving
0008: 41 70 70 74 3a 3a 48 72 Appt::Hr
0010: 43 68 65 63 6b 50 61 74 CheckPat
0018: 74 65 72 6e 20 66 61 69 tern fai
0020: 6c 65 64 2e 20 4d 61 69 led. Mai
0028: 6c 62 6f 78 3a 42 72 69 lbox:
0030: 61 6e 2e 4d 63 47 75 69 user
0038: 67 61 6e 40 6f 6e 7a 6f @ABC
0040: 2e 63 6f 6d .com

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Warning:

————————————
Event Type: Warning
Event Source: EXCDO
Event Category: General
Event ID: 8260
Date: 7/2/
Time: 1:56:45 PM
User: N/A
Computer: ABCSBS2K3
Description:
An attempt was made to save an appointment with the subject “Calendar Item” to mailbox user@abc.com. The duration of the appointment was too large, so it was not saved.

For more information, click http://www.microsoft.com/contentredirect.asp.

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Make sure that a file system-based antivirus program running on the Exchange Server is not scanning the Exchange IFS drive (M drive). Additionally, make sure that any backup software used is not backing up the Exchange IFS drive. If the corruption cannot be isolated or corrected, restore the data from a backup. For more information, see the Knowledge Base articles referenced earlier in this article.

Take a look @ below article

http://support.microsoft.com/Default.aspx?kbid=301234

http://support.microsoft.com/kb/310440/en-us

Allen Song
, , 17, 10:09 AM

…………………………..

Is it always referring to the same user?

Does he/she have a PDA? Or a MAC ?

Karl

…………………………..

yes they are using mac.

…………………………..

See if these help;

http://www.mcse.ms/archive/index.php/t-543541.html
http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/e55d12ef-7431-4316-b828-c42312217d6a/

Karl

…………………………..

Take a look @ below article

http://support.microsoft.com/Default.aspx?kbid=301234

http://support.microsoft.com/kb/310440/en-us

Allen Song
, , 17, 10:09 AM