How to connect Joomla 5 to send mail using Office 365

[jgkiefer]

I have been at this all day and have been unable to connect Joomla 5 to send mail through office 365. I really need some help with this.
I successfully connected my hosting cpanel to use Office 365 for email. That part is all good.
Now I am unable to setup Joomla to send out mail through Office 365.
I setup Joomla to use SMTP.
Host smtp.office365.com
Port 587
Security - STARTTLS
SMTP Authentication - Yes
Username and password is my Office login username and password.

That didn't work
I then setup a Office 365 connector.
That also didn't work.

When sending out Joomla test mail I receive
Error SMTP Error: Could not authenticate.

I do not know where else to turn for help with this.
I do not understand why this is so difficult.
Thanks for any help offered.

[toivo]

Maybe you need to use Application Specific Password (ASP), similar to the authentication method for smtp.gmail.com.

Ref. How do I use Gmail as my mail server?

[jgkiefer]

Thank you I wish it were that simple.
I've been following this post but could not get it to work.
viewtopic.php?f=811&t=996359&p=3677715& ... 5#p3677715
Since it is an older post I was hoping someone has current info.
I wish there were a plugin for this.

[Webdongle]

I think you have to tell office to allow Joomla
https://learn.microsoft.com/en-us/excha ... sing-oauth

[sandstorm871]

I have a Joomla 3 site where the admin has successfully used MS365 SMTP for many years - [] However, I am just about to launch their new Joomla 5 site.[/i]

We have been told by the client that they are soon moving their MS365 to use MFA and that the SMTP Username/Password will no longer work on the website.

The client's IT guys have set up a connector and provided the information, which seems to be working.
1 - They suggested that we needed a dedicated/static IP to set up the connector correctly - Which we already had
2 - They set up the connector against the IP & Domain name
3 - Then gave me a new unique SMTP hostname, suggest port 25 and to turn off SMTP authentication as not needed with a connector.

Email: [email protected]
Password: n/a
SMTP Server: mysite-com.mail.protection.outlook.com
Port: 25

I hope this helps - However, I didn't have anything to do with the connector itself. The main point was to disable the SMTP authentication.

[jgkiefer]

Thank you that was very informative. I will get a static IP and give it a try.