Packages naming conventions:

postfix-x.y.z-r.<type>.rpm		Stable packages
postfix-x.y.z.yyyymmdd-r.<type>.rpm	snapshot packages

<type>= src for source packages and
        i386,sparc,ppc,s390,alpha for binary packages.

Packages for: Redhat Enterprise Linux 3 / Whitebox Linux.

The packages have been provided by:

Fred Grayson <fred@fred-grayson.net>
Henrik Schack Jensen <henrik@schack.dk>
Simon J Mudd <sjmudd@pobox.com> (built on Whitebox Linux.)

If you are looking for a newer binary rpm than the one shown here please
consider building one yourself from the src.rpm in the SRPMS directory.
It may well be newer.