iRule for TLS SMTP encryption (Colin's code)

You don't need to apologize. Please don't say that.

 

 

One thing that might be worth mentioning, 465 is usually used for implicit SSL (which means it starts SSL negotiation right after TCP handshake)

 

this irule is for "explicit SSL" which usually on port 25. After TCP handshake and basic SMTP greeting, client sends "STARTTLS" command to tell server that it is going to start SSL negotiation in the same TCP connection. Wireshark or tcpdump can tell when SSL negotiation starts.

 

 

I am not Microsoft Exchange expert at all. So I might be wrong. (I tested this iRule with outlook express. I used port 25 and enable SSL)

 

 

btw, thanks Colin.