Port 25 is the port that most email programs are set to as your OUTBOX port for your Internet connection, used to send out-bound email. Your computer connects to Port 25 of a email server when it wants to send email. You may have, in the past, used Port 25 to connect to your own email server hosted by your ISP but if you have an email account with us and you would like to be able to SENT email through our mail server, you can just submit a trouble ticket asking for us to help. Most of the time, it just involves setting up your email problem to use a different port to SEND email through. If this is the case, we can help!