I see. Domain username and password authentication is possible. I even have two solutions for that.

1. Using Kerberos

2. Using Samba

For fetching mail, I’ve heard there’s FetchMail but I don’t haven’t actually tried that one yet.

I mean. I want my users to use domain username and pasword to authnticate on linux postfix server to receive and send the emails.

but now my IT manager wants somethng else. right now we have our email system online(with email hosting company(third party)) and our users send/receive emails through internet by using outlook. Now the thing is that due to this send/recieve process our internet speed has gone down and i want to configure linux system as a fetching mail server which can fetch all users email from our online email server to our local mail server so that my user can send/receive emails through local mail server.

i hope u r understanding me….

thanks in advance

“Is there any way my users can use windows login to configure outlook account.”

What do you mean by that?

I have windows 2003 server (AD) and i want to configure my email server in linux(Postfix) and i want my clients to use outlook 2003. Is there any way my users can use windows login to configure outlook account. if yes then how?.