www.fastmail.fm/help/technology_ssl_vs_tls_starttls.html
There's often quite a bit of confusion about the different terms SSL vs TLS vs STARTTLS. This article explains the differences.
en.wikipedia.org/wiki/STARTTLS
An article from wikipedia describing STRTTLS
stackoverflow.com/questions/5540374/starttls-vs-ssl-tls
Mailclients offer both settings, the STARTTLS and SSL/TLS. What is the difference between STARTTLS and SSL/TLS?
This thread gives an ecellent explanation of this subject.
www.limilabs.com/blog/ssl-vs-tls-vs-starttls-stls
There's often quite a confusion about the different terms: SSL, TLS, STARTTLS and STLS. SSL and TLS SSL and TLS are cryptographic protocols, both provide a
serverfault.com/questions/523804/is-starttls-more-safe-than-...
In Thunderbird (and I assume in many other clients, too) I have the option to choose between "SSL/TLS" and "STARTTLS".
As far as I understand it, "STARTTLS" means in simple words "encrypt if both ends support TLS, o ...
novosial.org/openssl/tls-name/index.html
This page outlines terminology problems with the Secure Sockets Layer (SSL) protocol, the Transport Layer Security (TLS) protocol, the term STARTTLS, and the Transmission Control Protocol (TCP) ports used for encrypted connections. Other information on ...
superuser.com/questions/620745/thunderbird-ssl-tls-vs-startt...
Following up this question on serverfault "Is STARTTLS more safe than TLS/SSL?" it came up that the question is rather a question about Thunderbird and not about the actual protocols. Also, if you Google about this topic you will find ...
luxsci.com/blog/smtp-tls-all-about-secure-email-delivery-ove...
TLS, Transport Layer Security, seamlessly ensures transport email encryption for email delivery over SMTP between supporting servers. This is an easy to read article explaining SMTP TLS.
www.fehcom.de/qmail/smtptls.html
An indepth tutorial on SMTP and TLS.
