hi all
i have a domain name registered with an isp and my mail server is also sitting at the isp side i need to configure such that ., postfix pulls all the mails from the server and keeps it locally and users should receive the mails from postfix local server
i also want to enable relaying pls tell me how to configure it my details are as follows

domain : veritas-in.com (on ISP side)
pop3 server : pop.net4india.com (on ISP side)

all feedbacks are welcome

Thanks & Regards
Sanjeev

You may not get this to work.
Postfix is a programme that listens for incoming messages and delivers them to recipients, usually a spool file locally, it doesn't collect mail.
Postfix will allow local clients to send mail outwards via it's smtp server, which adds some extra complexity if they can send via pop.net4india.com directly.

To collect the mail from a remote server you need a POP client programme, eg "fetchmail" to collect and store locally,
& to read the incoming messages, you need at minimum a POP server for clients to talk to, eg ipop3, which runs from xinetd.