Postfix- slow mails

[Patel]

I have a redhat 9 system with php4.3.1 and apache 2.

The machine previously had "sendmail", later postfix was installed. Now it is taking too long for outgoing mails.

A simple code,

<?php
mail("[e-mail]", "Test",
"Hello there,
this is test.",
"From : local <[e-mail]>\r\n
Reply to: aaaaa");
?>

takes too long, over 2 minutes to send mails. The incomming mails with postfix are very fast.

Is there a way to finetune either postfix or php configuration to make this process faster?
Anyone, please guide on this.

Thanks,
Patel