can from address be configured for xymon alerts?

hi,
can "from " address be configured for xymon alerts?i want to send xymon
alert mails from "user-eb54b1246875@xymon.invalid" address.But is is sending
alerts from xymon@`hostname`.There is no flag/variable that accepts for from
address.I dont want to change my servers sendmail configuration.I want to
change configuraion from xymon side.Also i am getting dsn erros.
I dont want to change hostname of the machine as it might take machine's
name from /etc/hosts.
What is the way to do that?


-- ion.
Pankaj V. Dorlikar