How to configure sendmail option ?

[sridatta]

Hi frenz...

I have a FC6 machine running on my system on a network.. i want to setup a forum for my local network users.. I have installed forum succesfully but.. i m not able to send any mails. i.e. email activation, mass e-mails etc are not functioning...
Please suggest me a method to configure mail through either of the following so that forum should be able to send mails...

1. sendmail
2. i have an account on POP3 smtp server on a different machine in my network.

PS: I have tried configuring options in Configuration under Administration panel. But it says access denied !!

[praka123]

sendmail is surely good.but other options like exim4,postfix are easier to configure.