[root@server-07 init.d]# rpm -qi sendmail
Name        : sendmail                     Relocations: (not relocatable)
Version     : 8.12.11                           Vendor: Red Hat, Inc.
Release     : 4.RHEL3.6                     Build Date: Fri 09 Jun 2006 09:53:22 AM EDT
Install Date: Sun 20 Aug 2006 04:28:44 PM EDT      Build Host: hs20-bc1-7.build.redhat.com
Group       : System Environment/Daemons    Source RPM: sendmail-8.12.11-4.RHEL3.6.src.rpm
Size        : 1150575                          License: Sendmail
Signature   : DSA/SHA1, Wed 14 Jun 2006 08:52:10 AM EDT, Key ID 219180cddb42a60e
Packager    : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>
Summary     : A widely used Mail Transport Agent (MTA).
Description :
The Sendmail program is a very widely used Mail Transport Agent (MTA).
MTAs send mail from one machine to another. Sendmail is not a client
program, which you use to read your email. Sendmail is a
behind-the-scenes program which actually moves your email over
networks or the Internet to where you want it to go.

If you ever need to reconfigure Sendmail, you will also need to have
the sendmail.cf package installed. If you need documentation on
Sendmail, you can install the sendmail-doc package.