Creating a new Mailbox in Microsoft Exchange 5.5 (SP4) gives the message:
There is not enough space on the device. Microsoft Exchange Directory system error ID No. C105001C.
There is around 900Mb on the C: drive of this computer and 2Gb on the other partition used by Exhange.
I've discovered that stopping and then restarting the Exchange Services is a work-a-round.
I'd like to know what is causing this to happen and how do I resolve it?