Members are not visible in Dist group

Some of the members in distribution group are not visible and they dont receive emails intended to that group, when you add in the EMC its says object exist.

Have anybody else faced such situation , i see that user is a member in active directory but not in the outlook and exchange console.

Any suggestions would be appreciated

AD:win2k3 (3 servers)
Ex2k7 :2 mailboxes (cluster),2 hub/cas
Ex2k3: one old server still exist in the AD site.


Shaik
auk_expertsAsked:
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AkhaterCommented:
If I remember well I have faced something similar once and the solution for me was to remove that user and add it again to the group.


You can try this as a start
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auk_expertsAuthor Commented:
Thanks , i am currently doing that but was frustrated to face users saying i dont have answer so i thought of posting a question.

Thanks but appreciate if we could lead to a cause or solution.


shaik
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
the cause can be if the ad account or mailbox is re-created, as every ad account has a associated SId and a mailbox has a associated Mailbox GUID and recretaing would mean that the value would be changed as its unique.
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Look if you have migrated from Exchange 2003 and the DL is anything apart from Universal group Exchange 2007 cannot understand it so you might want to change it to Universal and that would surely take care of the issue .
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Any updates ?
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Any updates on the issue ?
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auk_expertsAuthor Commented:
Thanks for all the inputs, to let you know this happens when you use tools such as IDEAL administrator and you try to set some other group as primary for the user and when you go to emc and see the memership of the previous group which was primary it will not show the user and that is due to improper command used in setting the primary group
below is the comment from microsoft about it.

http://support.microsoft.com/kb/275523

I hope it helps others.

shaik
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