How to fix connection issue for outgoing server with Odoo.

Lucas Van Nedervelde 10

I have configured the outgoing mail server from odoo to Azure but I got the below issue. Issue while connecting the server: The server refused the sender address (my email) with error b'5.7.57 Client not authenticated to send mail. Error: 535 5.7.3 Authentication unsuccessful [LO6P123CA0028.GBRP123.PROD.OUTLOOK.COM 2024-01-12T14:16:52.050Z 08DC12770BCFB540]' Is anything left from the Azure configuration? permission

I am looking forward to hearing back from you.

Dirk Wauters 0 Reputation points

2024-01-18T13:32:44.7033333+00:00

Same issues here! The longer the more unstable it gets... De server heeft het afzenderadres (our mail) met een fout afgewezen b'5.7.57 Client not authenticated to send mail. Error: 535 5.7.3 Authentication unsuccessful [LO2P265CA0352.GBRP265.PROD.OUTLOOK.COM 2024-01-18T13:31:32.112Z 08DC16C7CC999D49]' fyi: documentation from odoo on this: https://www.odoo.com/documentation/15.0/applications/general/email_communication/email_servers.html we have followed this to the letter... We had issues on tuesday all day, today it's happening again this afternoon, more and more issues with this
Conrad Kath 0 Reputation points

2024-03-26T17:58:52.0833333+00:00

Same issue here... did you solved that somehow?

I would be very grateful for a short info.
Arturo P 0 Reputation points

2024-05-24T03:11:47.42+00:00

Were you guys able to resolve this?? I'm having the exact same issue now and no matter what I do I can't seem to get past this error. I've been at this for days now.... I'm on odoo.sh and had this working just fine and all of a sudden we started getting this error.
Juan Vega 0 Reputation points

2024-06-02T01:06:25.9733333+00:00

I was able to solve the problem. It's basically due to the MFA. Since I had Security defaults enabled on my Tenant, I had to disable it. In order not to lose the MFA requirement, I created a Conditional Access Policies to apply to all my users and excluded the user account that registers the Token in Odoo.

Then I opened an incognito window in the browser, opened my Odoo instance, re-registered the token, to re-validate my M365 user with username and password, it asked me to register my phone number (I think that was part of the problem, being in In my case I'm using a new account, the security options had not been configured). When the Token was generated again with the account, the test already worked without problem

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How to fix connection issue for outgoing server with Odoo.