Can anyone assist with a problem as follows ....

SQL6.5, SP3, automatic sending mail using xp_sendmail through MAPI
interface to local Notes Mail client (4.6.x). All works fine for a number
of hours, but eventually the a series of 'busy with the results of another
hstm' errors appear and the MAPI interface appears to lock up.

The suspicion is that a bad email address is being forced through to the
MAPI client which is then badly handled by the Notes client.

However this is proving hard to prove, and I wondered if anyone out there
has ever come across a similar problem which has been identified as a
product-bug in SQLServer/MAPI/xp_sendmail.

Any suggestions or thoughts gratefully received.


Cheers
Ian.