Looks to be just taking a little while to communicate with the SMTP server.
you would need to work with the host to determine why the smtp server is slow to respond.
some things that may be worth looking into:
-You are using a dynamic value for the from Address. to using a valid email for your domain as the from address. if you click the from button to access Advanced From settings, you can use the dynamic value for the replay to option.
- in the SMTP server settings, you have left the server address and port blank. double check with the host to see if it would be better to specify the server and port address.
- in the SMTP server settings, try checking the option to pass the from address as an extra parameter.