Forum Discussion
Authenticated Secure SMTP
Struggling to understand how to configure MS365 Business Standard (or Exchange Online Plan 1) for Authenticated Secure SMTP. This is for a third party vendor to securely send data to an email address...
Not sure if you've reviewed this blog: https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/authenticated-client-smtp-submission
It may also pay to read this blog to see why it's not recommended: https://techcommunity.microsoft.com/t5/exchange-team-blog/securing-authenticated-smtp-in-exchange-online/ba-p/1293154
It may also pay to read this blog to see why it's not recommended: https://techcommunity.microsoft.com/t5/exchange-team-blog/securing-authenticated-smtp-in-exchange-online/ba-p/1293154