When you want your Tier2 to have ability to manage distribution Groups by adding multiple managers to it, you may receive the error “You don’t have sufficient permissions. This operation can only be performed by a manager of this group.” in Exchange 2010 SMTP organization.
The issue might have been caused by “security group management check” outlined in the following KB
Remedy to this issues is to add the helpdesk administrators into RBAC Role Groups called “Role Management” so that they can populate the DL group membership with multiple managers.
“A positional parameter cannot be found that accepts that argument –BypassSecurityGroupManagerCheck “ this error simply being generated due to “Un sufficient rights”
Set-DistributionGroup "CTOS" –ManagedBy brian@ZtekZone.gov,Sam@ZtekZone.gov
Log into ECP with org administrator privileges
Open Administrator Roles, select “Role Management” assign this to your Helpdesk administrators.
Role Management Role allows
This role enables administrators to manage management role groups; role assignment policies and management roles; and role entries, assignments, and scopes in an organization. Users assigned this role can override the role group managed by property, configure any role group, and add or remove members to or from any role group.
After changes have been made you should not be receiving the same error.
Stay tuned until next time.