2013 Exchange adding mailbox (INSUFF_ACCESS_RIGHTS)

trying (in vain) to add mailboxes via admin center

tried domain admin logon an my own (also admin)

error i get is

Active Directory operation failed on DC2.hrx.ds this error is not retriable. Additional information: Insufficient access rights to perform the operation. Active directory response: 00002098:SecErr: DSID-0315BB9, problem 4003

i have tried this suggestion http://www.petenetlive.com/KB/Article/0000719.htm with no change

domain functional level is 2008r2

exchange is installed on 12r2

any ideas?

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MASEE Solution Guide - Technical Dept HeadCommented:
Thsi is a permission issue.
Are you trying with an administrator username?
mudcow007Author Commented:
yep domain administrator

now looking at what groups domain admin is a member of (within AD)  the only group that mentions Exchange is

"Organization Management"

is that correct? or should the domain admin account be part of more groups?

also within Exchange the only group domain Administrator is

"Organization Management"
MASEE Solution Guide - Technical Dept HeadCommented:
Please check this

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mudcow007Author Commented:
thanks that was it...
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