Basic mail settings for Outlook365

I am inserting O365 mail credentials that work with other apps (not nextcloud) in Settings->Basic Settings->Email Server and no matter what combination I use I cannot make a connection

Can someone please point me in the right direction.

Might this be helpful?:

Thankyou nephilim but the settings suggested I am already using.

Nextcloud complains with:

A problem occurred while sending the email. Please revise your settings. (Error: Expected response code 354 but got code “503”, with message "503 5.5.1 Bad sequence of commands

Oh my, I had forgotten about this. I got O365 exchange to work with Nextcloud. Under basic settings, use send mode smtp. Select STARTTLS. In from address, enter your o365 email ‘’. Authenticaion method is ‘Login’. Server address is, port 587.

Credentials is your O365 user email address again ( If you have two factor enabled on your O365 account, you will need an app password for the credential password field.

This works for me. Good luck to all…


This is still failing for me, it refuses to authenticate. Settings are all correct, any ideas? Running NC 18.04.02

There’s a small typo in the solution: the server address is (not

With this fix, it worked for me too.

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I cannot get it to work. The settings can be found in the outlook web app - but they don’t work.

What I particularly hate is the way the Nextcloud mail app doesn’t give you any indication that it failed.