[SunHELP] Sendmail

[Shain Miley]

Hi,
does anyone know what I need to do to the sendmail.cf or sendmail.mc
file to have sendmail generate a custom error message when a ruleset is
broken?  I have set up a rule so that certain subjects are blocked but i
don't want the message to say "message could not be delivered"  I want
the user tp receive a message that says..."email may contain a
virus...please contact ..." Any ideas on how to make this happen?