We have a in house accounting server running SCO and send mail. It sends out reports on a daily basis and most people get them. One or Two users do not.
I have checked message tracking in exchange2003 and it shows they are delievered. In OWA they show up. When the user opens outlook
these emails disappear. His PDA is disconnected at the time. I have done an advanced find on both the currant mail box and the archive and
there is not sign of the messages ever existing. If we send the same messages manually with accounting server then they go through.
The server is only sending 1 every 30 seconds and tehy are about 100k in size max.