Skip to main content

msdyn365bc - SMTP with Multi-factor Authentication.

Hi Readers,

I am sure you have either heard or using Multi-factor authentication.

The Reason companies use MFA because - 
Your passwords can be easily compromised. MFA immediately increases your account security by requiring multiple forms of verification to prove your identity when signing into an application.

With Great powers there are new issues or I should say new configuration need to done with dependent software's.

In this article we will fix related to SMTP Setup changes that need to be introduced due to Multi-factor authentication.

Error message in SMTP after Multi Factor Authentication -

Business Central -

The mail system returned the following error: "A call to MailKit.Net.Smtp.SmtpClient.Authenticate failed with this message: 5.7.3 Authentication unsuccessful [PN1PR01CA0096.INDPRD01.PROD.OUTLOOK.COM]".

Dynamics NAV - 

The mail system returned the following error: "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 [BM1PR0101CA0052.INDPRD01.PROD.OUTLOOK.COM]".

Steps for New Setup.

1. Open Office 365 Security Info using link -

2. Click on Add Method and Choose App Password.

3. Provide a App Name.

4. Copy and Save the App Password. This cannot be accessed again.

5. Use App Password in SMTP Mail Setup window and Send Test Email.

Hope this article helps you to setup your SMTP in Business Central / Dynamics NAV with Multi Factor authentication.

Saurav Dhyani


Popular posts from this blog

Send Mail with Attachment From Navision.

Hi all, We have seen how to save a report into PDF and how to send mail to a customer. Let's link these two post in one i.e. Mailing statement to a customer into PDF Format. This article is part of the Series. Please Refer  Table of Content here . If you have the old objects set let me brief you what I will be changing - 

Microsoft Dynamics NAV 2016 - How to Configure Phone Client.

Hi All, In this article we will discuss how we can connect Microsoft Dynamics NAV 2016 with New Client Launched i.e. Phone Client. This Article Contain Steps for a Android Phone as I have Only Android Phone. I am doing it having all tiers on my windows 8 machine, steps remain same for multiple servers but issues might be different. What we Need (Other what we discuss in this article) -  The Service Tier should be on Public IP . Some of the Data-card does not Provide you Public IP. check it for sure.

Download Microsoft Dynamics Business Central on Premises 2020 Wave 2 Release.

 Hi Readers, As Expected Microsoft have released #msdyn365bc 2020 wave 2 is available.  This article provides details of the new release. The 2020 release wave 2 for Business Central delivers a wealth of new features. Read What's new in 2020 Release Wave 2 here .  Dynamics NAV Customers upgrading to Business Central on Prem will be able to run business central on premises, move to cloud or choose a hybrid approach.