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 "xymon at monitor.mgmt.machines" 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