What ports need to be open for Gmail?
What ports need to be open for Gmail? Incoming connections to the IMAP server at imap.gmail.com:993 and the POP server at pop.gmail.com:995 require SSL. The outgoing SMTP server, smtp.gmail.com , requires TLS. Use port 465 , or port 587 if your client begins with plain text before issuing the STARTTLS Read more…