It is an intermitant problem with a clients NT4 SP6 Server that is running Remote synchronisation software via Email (a horrible way to synch i know)
I wondered at first if it was the Synch software but no one here has ever seen it before, and i have never seen this sort of problem with NT or Exchange Server (it was then they told me they are using Notes/Domino)
I suspect 1) i have missed something in NT
or 2) it is a Notes prob, which i know nothing about.
Their IT guy that sent it to me will probably solve it before me. I was informed of it because it may have been caused by the Synch software or the Database which it supplies data to (CRM software an all that!)