550 Access denied - Invalid HELO name

Solution

If you're getting this error when sending out email.

Please double check your email setting to use the following

For Microsoft Outlook
1. Click Tools then E-mail Accounts...
2. Select "View or change existing e-mail accounts" and click Next
3. Select the email account and click Change
4. Click on "More settings"
5. Select "Outgoing Server" tab
6. Tick "My outgoing server (SMTP) requires authentication"
7. Select "Log onto incoming mail server before sending"
8. Click Ok
9. Press Next
10. Lastly, press Finish

Once these steps are done, try to send the reply email again.

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