Setting up mail server on FC 6.....help!!!

[as_astar]

Hello alll....i've been trying to setup a mail server on my machine running FC6, actually we have a group of around 25 ppl in the R&D section of the company, the existing mail server is on a machine running RedHat 7.3...i was asked to upgrade it so that it wud work on FC6..............now i know that FC6 comes with sendmail which can be used to setup a mail server......

1st question : should i go on with sendmail, or is there any better way of setting a mail server??

2nd question: if i choose to go with sendmail (which is what i've been banging my head with for the past few days ), how can i actually get the server up and running so that the server can do the following : 1. the mails for my group of 25 could be routed locally
2. the mails outside my group could be handled by the mail server located in the copany's head office.

i was told that in order to have the server up and running,using sendmail, i would require to setup a DNS server
....is that so??? even for mails within my group of 25??

the DNS server has been the biggest problem...i've tried using BIND, but the zone files a lil' tough to handle, so i've given up hope......

anyway, if the DNS is necessary, can someone please tell me how to setup a DNS server??? so that, i can move to working with Sendmail, for the mail server..

this thing has left me drained after the last few days, and i would really appreciate it if some kind soul could step up and help me!!

[jledhead]

while sendmail is good, its very easy to configure wrong, making it vulnerable. Postfix is easily configured and easy to work with.