Example SMTP port in mailserver autoconfiguration xml is incorrect

Hi,

There is an example SMTP port in the mail server autoconfiguration settings mentioned:

$SMTP_PORT - Automatically determined SMTP server port (like 589) taken from the mail server configuration

589 is not a default SMTP port, I think you mean 587 which is the submission port for sendmail and others. Can you please update the documentation to reflect that (The IMAP port listed in the same example is valid, so I figure this needs to be valid as well).