When meeting requests are sent out internally in the organization from a users mailbox (not a mail-enabled Public Folder), certain people do not receive them and the request is bounced back to the sender with the following information?: Delivery has failed to these recipients or distribution lists: Melvina Carter There's a problem with the recipient's mailbox. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator. _____ Sent by Microsoft Exchange Server 2007 Diagnostic information for administrators: Generating server: CityMail07.coynet.com melvina.carter@yonkersida.com #550 5.2.0 STOREDRV.Deliver: The Microsoft Exchange Information Store service reported an error. The following information should help identify the cause of this error: "MapiExceptionUnexpectedType:..., 255.27962:4D000000, 255.27962:86000000, 255.27962:86000000, 255.27962:9C000000, 255.17082:04030480, 0.23137:FA000000, 4.21921:04030480, 255.27962:FA000000, 255.1494:0F010480, 255.1238:0F010480, 0.27676:0F010480, 0.23580:0F010480, 0.36537:9C000000, 4.5587:0F010480, 0.65193:0F010480, 0.16668:0F010480, 0.27420:0F010480, 0.39497:0F010480, 4.55881:0F010480, 0.27676:0F010480, 0.23580:0F010480, 0.36537:0F010480, 4.5587:0F010480, 0.65193:0F010480, 0.39497:0F010480, 4.55881:0F010480, 0.27676:0F010480, 0.23580:0F010480, 0.36537:0F010480, 4.5587:0F010480, 0.65193:0F010480, 6.21970:0F0104800201F3670F010480, 6.21970:0F0104800201F3670F010480, 6.21970:0F0104800300EF670F010480, 6.21970:0F0104800201F3670F010480, 1.17350:4000050E, 4.2081:04030480, 255.1750:00000000, 0.26849:D9060000, 255.21817:04030480, 0.32758:315D3A20, 4.16586:04030480, 0.22518:6E673A20, 4.28874:04030480, 0.17654:796E6574, 4.18122:04030480, 0.25510:D9060000, 4.25270:04030480, 0.25529:325D3A20, 4.30026:04030480, 16.18969:34000000, 17.27161:000000002E000000000000000000000000000000, 255.23226:00000000, 255.31418:00000000, 0.24569:02000000, 0.19921:06000000, 4.26617:04030480". ## Has anyone else run into this problem and/or does anyone have a reason why this is happening and how to correct the problem?

Assuming they are sending from Outlook. Disable any 3rd party scheduling Add-ins. If users have moble devices you may want to look for patterns there. Some systems (iphone, blackberry/bes) format the container differently.

Assuming they are sending from Outlook. Disable any 3rd party scheduling Add-ins. If users have moble devices you may want to look for patterns there. Some systems (iphone, blackberry/bes) format the container differently.

Can other user send meeting request to Melvina Carter? If you send email to Melvina carter, will this work? From the error information, this seems a MapiExceptionUnexpectedtype issue, I suggest you follow these steps to troubleshoot the issue: <1> Send email to Melvina carter, then check will this issue occur or not? <2> use other user send meeting request to have a try. Thanks, EvanEvan Liu TechNet Community Support

Can other user send meeting request to Melvina Carter? If you send email to Melvina carter, will this work? From the error information, this seems a MapiExceptionUnexpectedtype issue, I suggest you follow these steps to troubleshoot the issue: <1> Send email to Melvina carter, then check will this issue occur or not? <2> use other user send meeting request to have a try. Thanks, EvanEvan Liu TechNet Community Support

Hi first we need to check only particular user having problem or for most of the user. Please send test email to melvina.carter@yonkersida.com and also send him from meeting request from melvina id to others. connect me :- http://in.linkedin.com/in/satya11 http://facebook.com/satya.1000 Don't forget to mark helpful or answer

Hi first we need to check only particular user having problem or for most of the user. Please send test email to melvina.carter@yonkersida.com and also send him from meeting request from melvina id to others. connect me :- http://in.linkedin.com/in/satya11 http://facebook.com/satya.1000 Don't forget to mark helpful or answer