The postfix-20010709snapshot-2.0.5.TLStest.src.rpm was built with 
the TLS patch pfixtls-0.7.4-snap20010709-0.9.6b.

When you install the src rpm
	rpm -Uhv postfix-20010709snapshot-2.0.5.TLStest.src.rpm
a pfixtls-0.7.4-snap20010709-0.9.6b.tar.gz will be extracted along 
with everything else. You can unpack this tarball and find a "doc"
directory that you will probably find helpful. 


Keep in mind that this is totally experimental. I just applied the
patches and built it. I haven't even have had the time to play with
it at all. 

It looks like to get the TLS functionality you will have to uncomment
the "smtps" and "submission" lines in /etc/postfix/master.cf and 
probably comment out the "smtp" line and restart postfix BUT I AM ONLY
GUESSING. 

Enjoy 

Pete