OK I found MFCMAPI. I opened corrupt email box and compared BINARY VALUE of PR_IPM_CONTACT_ENTRYID in Root Container with PR_ENTRYID in Top of Infromation Store. Both values are the same. Anyway all of these records there look for me very confusing. I was wondering if I should look for record relates to Free/Busy Folder?

I don't know if this is right remark but following values are different:
PR_IPM_CONTACT_ENTRYID in Root Container
and
PR_ENTRYID in Freebusy Data.
Should it be the same in both binary value?

Thank you for any help.

Luu