on 2019/11/26 17:02, Matus UHLAR - fantomas wrote:
I would set up port 465 also. Note that TLS on 465 is implicit,
while on 587 is
explicit, so it's easier to allow unencrypted connections by a mistake on
587.
On Tue, 26 Nov 2019, Wesley Peng wrote:
587 is also used for StartTLS, am I right?
On 26.11.19 11:50, Bernardo Reino wrote:
Yup, that's what Matus meant with "explicit". Connection starts in
clear text and is then (explicitly :) "upgraded" to TLS.
...and there's no "starttls" on 465, that's what I meant "implicit".
while port 465 was assigned for SMTPS in January 2018, it's been used this
way on many sites/services for years (even decades)
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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