Webmail problem

Hello,
My chief has asked me to permit webmail users (the server is iMS 5.2) to send mail "from" different address for example one day toto@monday.com the other day toto@tuesday.com.
I search for days and don't fond any way to change the address used to send message. Is someone is a god with Webmail and can help ?

Thanks

Anne-C�cile

dont know webmail but to do this with mailx use the -r switch.

for webmail you would have to download some type of server software to work with your mail server. search on http://freshmeat.net for 'webmail'