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Dynamics 365 Community / Forums / Supply chain | Supply Chain Management, Commerce / Client was not authent...
Supply chain | Supply Chain Management, Commerce
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Client was not authenticated to send anonymous mail during MAIL FROM [AM0PR10CA0047.EURPRD10.PROD.OUTLOOK.COM]

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Posted on by Community Member

Hi Everyone.

I've been trying to set up the email parameters for a while now without success.

the email client is part of my customer's tenant. I am using the admin user

I followed the SMTP setup instructions as per the microsoft documentation.

I always end up with the following error:

 Client was not authenticated to send anonymous mail during MAIL FROM [AM0PR10CA0047.EURPRD10.PROD.OUTLOOK.COM]

Is there an issue with the user itself and its outlook settings?

Thanks in advance.

BR,

Simeon

I have the same question (0)
  • priyanshu2390 Profile Picture
    priyanshu2390 on at

    Can you check the below blog  

    https://support.office.com/en-us/article/Fix-issues-with-printers-scanners-and-LOB-applications-that-send-email-using-Office-365-c75542a8-c792-42c0-a8c5-291df987512d?ui=en-US&rs=en-US&ad=US

    Also do you see this error as well "The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57 SMTP; ".

  • Community Member Profile Picture
    Community Member on at

    This is the exact error I get.

    The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57 SMTP; Client was not authenticated to send anonymous mail during MAIL FROM [AM0PR02CA0174.eurprd02.prod.outlook.com]

    I discovered two other things in the mean time. The user doesn't have an inbox. It doesn't have an Office 365 account. Also It requires a text authentication to log in.

    My general questions should probably change to the following:

    1. What licenses should the account for email setup have?

    2. What type of authentication should the account have?

    3. What would the requirements for the environment be? Currently I am using a tier II sandbox environment.

    BR,

    Simeon

  • priyanshu2390 Profile Picture
    priyanshu2390 on at

    The user need to have an inbox , tier 2 sandbox looks fine. However you have to setup the mailbox first.

    Configure and send email - Finance & Operations | Dynamics 365 | Microsoft Docs

  • Community Member Profile Picture
    Community Member on at

    And what should the sender user minimum Office 365 license be? Just any that allows Outlook?

  • priyanshu2390 Profile Picture
    priyanshu2390 on at

    office e3 license

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