Microsoft have streamlined their mail setup process to make it easier for accounts to be setup. However in the process they removed some functionality which is required to setup non-relayed mailboxes.
- Check you are on a affected version, and check that you are using outlook 2016 v1707 or newer – https://www.conetix.com.au/support/article/determine-which-version-outlook-you-are-using
- Close Outlook
- Download our registry file from: Outlook2016SimpleMail
- Double click on the file and click Run, Yes, Ok.
- Restart your pc.
- Setup your mail as per https://www.conetix.com.au/support/article/new-mail-account-setup-outlook