Mac Mail - Cannot Send Message Using the server
|Email Client:||Mac Mail|
|Error Message:||Cannot send message using the SMTP server
You will need to update the SMTP server settings - most likely you're dealing with a port 25 blocking issue. If you are using a SSL on your site you can use the SSL port 465. Make sure the box to use SSL is checked. If not, you can use port 587 and leave the box unchecked.
The correct ports are below:
Non-SSL outgoing SMTP: 587
SSL enabled outgoing SMTP: 465