The error "Members can't remove themselves from security groups. Please set the group to Closed for requests to leave." when editing a distribution group.

Clearing out a corrupt transport queue.

MSExchange Transport Service will not start. Application eventlog has logged Source ESE, EventID 529 with this in the details. bytes failed verification due to a corrupted checksum log record. The read operation will fail with error. If this condition persists, restore the logfile from a previous backup.

Stop the MSExchange Transport Service

Go to C:\Program Files\Microsoft\Exchange Server\V14\TransportRoles\data\Queue\ (if installed in default location)

Create New folder OLDQueue,

Move all files in the Queue folder to new OLDQueue folder.

Start the MSExchange Transport Service

A new database will be created and your queue will be cleared.