port no

which port no. do i use for e-mail

mike hunt <mikehunt@hotmail.com> wrote:
> which port no. do i use for e-mail


Normally you'd use port #25/tcp for (e)smtp communication.
Your mailserer would listen on port #25 for incoming connections and would
expect the sender to talk smtp in order to have some mail data sent to it.
Your mailserver would connect to some other mail server's port #25 in order
to send an outgoing email via (e)smtp.

There are - besides port #110/tcp (pop3) and port #143/tcp (imap4) some
other ports used for communication with ssl encryption.

Best regards
Thomas.