So I just read this:
https://www.fastmail.com/help/technical/ssltlsstarttls.html
Quite helped me to understand the differences, but one of the parts that caught my attention was this:
"At some point, it was decided that having 2 ports for every protocol was wasteful, and instead you should have 1 port that starts off as plaintext, but the client can upgrade the connection to an SSL/TLS encrypted one. This is what STARTTLS was created to do."
In my particular case, I also think it'd be better to go back having only one port for each protocol. But, from what I could overall understand, they still cannot reach a "global" agreement, old software is too conservative, etc, etc, which has the effect of keeping more than one port for each protocol for good...
And I'd like to ask, what do you think in general?
In the case you think as well only one port would be enough, which case would you prefer to stay for good? The more recent TLS implicit ports, or the old ports just with STARTTLS?
Thanks again.
