503 Error when Sending Email
Sending Email with a valid account returns a message Error 502 service unavailable or similar.
Error 503 is an HTTP status code that means the web site server you are attempting to connect with is not available at the moment.
HelpDesk Post Office will attempt to retry. If it fails to connect to your mail server, the email will remain in your out box.
At the bottom of your Email queue will be an ALERT icon. Click to open so you can edit and resend any Emails as needed.