If you are facing issues while sending emails, then it is suggested that you follow a few basic troubleshooting methods. The steps that you would have to follow in order to solve the issue that you are facing is as follows:

Ensure that the outgoing mail server details are accurate

• Account Type: SMTP
• User Name: Your email address
• Password: Your email account password
• Server Hostname: Mail.bigpond.com
• Server Port: 465
• Required Authentication? Yes email account and password
• SSL/TLS: Yes

When you make sure that your outgoing server details are accurate, you would be able to solve the problem of not being able to send emails. If you are still caught up with this issue, then it is suggested that you connect with Bigpond tech support number and avail expert advice on your case.