By default, GroupMail is set to process messages over Port 25. Sometimes, mail servers use other ports. Gmail, for example, uses Port 587 – as do a number of other providers.
To change the SMTP Port settings in GroupMail, click on “Tools”, “Account Manager” and “Modify” to edit the settings of your GroupMail Sender Account.
On the Account Properties screen, click the “Delivery Options” tab and click the “Advanced” button at the bottom of the screen.
Then, simply highlight the SMTP Port Number and change it to the Port number used by your provider.
Some mail servers require a secure SSL connection. If this is the case, ensure that you check the “Server requires and SSL connection” box.
