SMTP Authentication issue in D365 FO

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Posted on by Swetha Molagavalli

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Hi All,

We are facing below SMTP Authentication error while testing the connection by enabling the Authentication required option in Email parameters. And also tested the process by disabling the authentication option we are able to send all the reports successfully.

"Mail authentication failed. Please verify your SMTP user name and password. If your SMTP server doesn't support authentication, please clear the SMTP user name and password. Server smtp.office365.com:587 using SSL/TLS supports the following authentication options: LOGIN, XOAUTH2"

Below are the screen shots of the Email parameters configuration setup:

We have tired few blogs but still not able to resolve the issues. Below are the few links:

Authentication issue when using SMTP in D365 FO - Dynamics 365 Supply Chain Management Forum Community Forum

Enable or disable SMTP AUTH in Exchange Online | Microsoft Learn

Please help us to resolve it. All Suggestions will be greatly appreciated.

Regards,

Swetha.

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saurabh bharti 15,039 Moderator on at

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RE: SMTP Authentication issue in D365 FO

I would suggest to connect with Support that will be faster help

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Komi Siabi 13,049 Most Valuable Professional on at

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RE: SMTP Authentication issue in D365 FO

Hello

I tested this on an environment on update 10.0.29. The issue lies with the email account used on the email parameters in System administration module.

I disabled the Authenticated SMTP on the account and I was able to reproduce the same error.

I re-enabled it back, and the error is gone.

Kindly enable the Authenticated SMTP on the email account using the below link.

learn.microsoft.com/.../authenticated-client-smtp-submission

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Swetha Molagavalli 197 on at

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RE: SMTP Authentication issue in D365 FO

Hi Komi Siabi,

Thank you for taking your time for checking the issue.

We have already checked that option it is completely disabled.

Regards,

Swetha.

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Komi Siabi 13,049 Most Valuable Professional on at

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RE: SMTP Authentication issue in D365 FO

Hi,

Please, my last response says, enable the authenticated SMTP on the email account used in the email parameters.

Please confirm if you have done so.

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Swetha Molagavalli 197 on at

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RE: SMTP Authentication issue in D365 FO

Hi Komi Saibi,

Apologies for misreading the suggestion. We have tired it. It is working.

Thank you so much.

Regards,

Swetha.

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