punit jain: > Hi Wietse, > > Gone through the links. I find Milter to be more suitable for my > requirement. A quick query on smtpd_milters, the call to external filter > would be same way the smtp negotiation happens ( HELO, MAIL FROM, RCPT TO > etc ) before accepting the message to be queued or is the call in some form > of HTTP get/post request ?
Milter applications are usually implemented on top of the libmilter library, which implements the Milter protocol. See: http://www.milter.org/developers Wietse