Running IIS 4.0<BR>Option Pack 4<BR>Service pack 5<BR><BR>When ever SMTP service is started the processor usage jumps right up to 98-100%. It just kinda flits in between 98 and 100. I uninstalled SMTP service and reinstalled it but that didnt seem to help. If i shut down SMTP everything returns to normal. Wondering if anyone else has run across this, and if they might know why this is happening.<BR><BR>Thanks.<BR>Sean Fagan<BR>