Vijaya > i need this for my mail server If you need it for your mail server, the default MTA Exim on Debian can handle 'rewriting' via /etc/email-addresses. Inside /etc/email-addresses, map john --> john.doe@picopeta.com. Hth. -- ragOO VU2RGU Help keep the Radio Spectrum FREE Help keep Computer Software FREE http://www.gnu.org/