Hi Every One,

I am very new to Linux , as i don't have any prior experience of linux systems, i am tierd of my exchange servers , they are giving me hard time, so i am now focusing to migrate my exchange servers to sendmail, so can any one please help me out in how to configure SMTP and POP Services on sendmail, i have almost 1400 users which are on Exchange server rite now, and i am using Exchange servers as POP and SMTP router.

So please let me know where i can get any information about how to configure sendmail from scratch, and what are the major security concern with sendmail.

Please reply me as i have to start working on this big project ASAP.

Thanks

BYE

In all actuality, Sendmail is not likely your best solution if secutiry is of high priority. Sendmail is easy to configure, but it has some holes. qmail is purported to be un-crackable.

A very easy way to setup sendmail is through webmin. Download and install the RH9 RPM http://www.webmin.com/ and then point your browser to 127.0.0.1:10000

Or, if you would like to walk through the config of sendmail manually, you can post any sticking points here.

Major security concerns? Usually Root Access.

I suggest, just like ezra143, that you use qmail or postfix, postfix is more secure also, and a lot easier to configure than sendmail.

For sendmail's doc, do a search on google or go to www.sendmail.orgm or get a good book.

I also suggest this:
www.mailscanner.info (virus/spam filter)
www.egroupware.org

pop is a seperate animal from your smtp server on your linux system.

simply configure your xinetd script to enable pop3.


/etc/xinetd.d/pop3

I do strongly recommend that you only use pop3s as your passwords can be snooped using pop3

/etc/xinetd.d/pop3s


the tool chkconfig can be used to turn it on

chkconfig pop3 on
chkconfig pop3s on