Sue;

 Do work around this you would want a solution outside of OnTime. What I do with our support email box, is I have some rules setup on the box itself to handle messages I don't want to receive back. For example, we receive some non-support related mails for other services in to the support mail address. These have rules setup to forward them to interested parties, and then move the emails to a specific folder.
 

For example where the sender is the postmaster you could have it be deleted or moved to a folder.

John Tkalcich

Axosoft Support