Friends,

I have a mail server(postfix) in my ISP which sends and recieve mail simultaneously for my ISP clients.

Now for a example, If i want to place a mail server (using postfix and let Its IP :192.168.10.1 ) into "a client premises" where client can just "sending" mail through 192.168.10.1 mail server but recieve mail using my ISP mail server. In this regards , How can I configure My Client End Mail server (192.168.10.1 ) ?

In a word, I just want to know how i make a mail server which
is used for sending mail but not for using recieving mail . Waiting for reply .......... Thx........

This is done by configuring your E-Mail Client. Just don`t add the "fetch" server as a "send" server.

Use different IPs or what ever you like (maybe you have local connections to the interent?).

I know the evolution can do this 100%.