SMTP Error message using Office 365 account

When I use the Office365 account credentials I receive a SMTP sending error message.
smtp.office365.com
port 587
O365 login account
O365 password

Please let me know what is going wrong because using my private email provider all is working fine.

kind regards,
Jan

make sure your username matches exactly as set in your O365 account.

I’ve done this and it is not working - I downloaded the latest version of manager before doing so

Hi
Still no luck following the office365 set up instructions - see message following
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57 Client not authenticated to send mail. [SY6PR01CA0080.ausprd01.prod.outlook.com]

You are responding to a thread almost 2 years out of date. Read the current Guides:
https://www.manager.io/guides/10643
https://www.manager.io/guides/9100

Visit all relevant links in those Guides. If they don’t answer your questions, provide all information requested in the second one. (Hint: “latest version” tells us nothing, as there can be several updates in a day.)

i have connect hotmail account on email setting but i got error
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57 Client not authenticated to send mail. Error: 535 5.7.3 Authentication unsuccessful [AM5PR0701CA0070.eurprd07.prod.outlook.com]

even i remove 2 factor aut

smtp.office365.com
usename : as@hotmail.com port 587

Did you read the earlier posts in this topic? If not, please read and follow them, including providing all information requested.

yes all Microsoft Office 365 | Manager
even i use smtp-mail.outlook.com
same error

But you have not furnished the requested information. No one can help unless you do.

I notice that you try to use Microsoft 365 SMTP server for a hotmail address. You should use the hotmail outlook smtp server. For example SMTP Settings for Hotmail Email Addresses

smtp.live.com connect from these smtp…issue solved

Excellent

By default you can only setup 1 email address. If done properly no problems should occur.