Yes, our outgoing mail server is called:

mail.'yourdomain.com'

Where 'yourdomain.com' is the domain you have set up a mailbox on. 

To use it you'll also need to tell email client that the outgoing mail server requires authentication, some may ask to specify the username and password for this - just enter the same as the incoming mail server login. SMTP ports can be either 25 or 587. We recommend 587 as some Internet service providers block port 25 unless using their servers. Encryption such as SSL or TLS would need to be disabled in order to connect successfully.