I'm able to receive but unable to send emails to external recipients from @ebridg.com.au
However, emails sent to other @ebridge.com.au can be done successfully.
Error message attached
Solution:
Open Microsoft Outlook and and go to Tools>Email Accounts...
If it's not already selected, click the View or Change existing email accounts option, and click Next.
Click the Change button, put your information in. username@domain.com and your password.
Click the More Settings button.
Click the Outgoing Server tab.
Click the checkbox for My outgoing server (SMTP) requires authentication. Leave the default setting to Use same settings as my incoming mail server.
If your ISP blocks port 25, Click the Advanced tab.
change the Outgoing server (SMTP) port from 25 to 26.