The ports are not dictated by Acrobat ...it leverages the programs that you have in place. Acrtobat will create the email but leave it up to that program to actually do the send.
The HTTP port is dictated by the submit URL designated in the submit button. If you have a submit URL where you do not designate the port then it will use port 80 by default. .....and yes you can use HTTPs on port 443 as well.
Paul