This should have all the information you need: http://www.postfix.org/TLS_README.html
If you have specific questions after reading the above, please see:
http://www.postfix.org/DEBUG_README.html#mail -- Noel Jones Byung-Hee HWANG wrote:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Recently, actually i'm interested in a certificate over TLS on SMTP as like ISC's MX. However, i don't know how to use that. Is there anyone to use certificate over TLS? Can you please give me some hint? Or information? Thanks in advance ;; byunghee -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iEYEARECAAYFAkkFW3AACgkQsCouaZaxlv4WzwCeKp2Kv3jM5j2p1OUTegSbyPG5 hbAAoK5/RCBs9LlWh4w3mvWWYdFOS63F =/Mmu -----END PGP SIGNATURE-----