The documentation previously stated that the SMTPS protocol is outdated, while this isn't true. The "port 465 situation" is often misunderstood because its usage has changed over the years, and this caused confusion, with old documents saying one thing, newer ones saying another one, and updated ones a different thing again. Wikipedia has a short, good explanation about the situation: https://en.wikipedia.org/wiki/SMTPS
In short, as of 2018, thanks to RFC8314, port 465 should be used similarly to port 587 (i.e. for _submission_ of emails), with the difference that instead of using STARTTLS for _maybe_ securing the communication with TLS, port 465 uses implicit TLS encryption, similarly to HTTPS (hence the name `submissions`, where `s` stands for secure).
As an example, you take a quick look at the output of `grep 465 /etc/services` on your Linux/BSD system
Please not that I'm not an email expert, just a curious guy that runs his own email server :)
Signed-off-by: Andrea Pappacoda <andrea@pappacoda.it>
- Change all `.. figure::` elements to `.. image::`
- Add empty `:alt:` so it is clear to screen readers that the images are decorative and don’t duplicate content
- Update styleguide with that info
Signed-off-by: Jan C. Borchardt <hey@jancborchardt.net>
mail_smtpstreamoptions is a new parameter in config/config.php.
This covers small mention of it and one example where it is useful.
I also fixed removed option to send mail in one place (PHP).
