[IMail Forum] Why use TLS

[Guy Deslauriers]

Hi everyone,   1- Could any of you convince me that using TLS is a good (or necessary) thing? I’m using Imail 8.22 and haven’t explicitly enabled that feature as it’s enabled by default.  What happens to secure inbound request when this feature is disabled?  Are the SMTP request simply dropped or will they fail over to standard SMTP, or is it a per MTA settings?     2- What’s the difference between TLS and SSL with a dedicated port?   Correct me if I’m wrong, but my understanding is that TLS enable a STARTTLS command on the SMTP connection on port 25, then start the encrypted session on that same port (25), as opposed to SSL listening for encrypted SMTP connection on a defined port.   Thanks in advance   Guy