"Enter the port number of your SMTP server. Use 25 for most unsecured servers and 465 for most secure servers."
Port 25 and 587 can be used for secure SMTP servers with STARTTLS, and 465 is used for SMTPS. I think it should be something like:
"Enter the port number of the SMTP server Joomla will use to send e-mails. Usually: - 25 when using a unsecure mail server - 465 when using a secure server with SMTPS - 25 or 587 when using a secure server with SMTP with STARTTLS extension."
email No hyphen and lower case. Except Email is obviously correct at the start of a sentence! We will be going with email (lower-case and non hyphenated) for consistency.
ok will correct that later.
Also notice that https://github.com/andrepereiradasilva/joomla-cms/blob/staging/administrator/language/en-GB/en-GB.com_config.ini#L121 is not correct:
Port 25 and 587 can be used for secure SMTP servers with STARTTLS, and 465 is used for SMTPS. I think it should be something like: