Verifying Email Configuration Settings

KB ID: 102108

Cause

The error may occur due to the following reasons:

1. When using a Google Workspace server as the SMTP server, the error could arise if the default configuration settings of the Gmail account block less secure applications.

2. Incorrect credentials for the configured SMTP Microsoft Exchange Server account.

3. If security defaults are enabled in your Microsoft 365, SMTP AUTH is already disabled.

Solution

For Google Workspace

To resolve the authentication failure problem, follow these steps:

1. Enable the "Allow less secure apps" option in your Gmail account by following these steps:

   a) Go to My Accounts in your e-mail settings.

   b) Select the "Sign-in & Security" option.

   c) Enable "Allow less secure apps" by setting it to "ON."

2. Ensure you have provided the correct credentials for your SMTP Exchange server.

3. After performing the above steps, re-enable the e-mail setting in your Vembu BDR web console. Send a test email to verify its success.

For Microsoft 365

To overcome the authentication failure problem in Microsoft 365, try the following steps:

1. Use the Microsoft 365 admin center to enable or disable SMTP AUTH on specific mailboxes:

   a) Open the Microsoft 365 admin center and go to Users > Active users.

   b) Select the user, and in the flyout that appears, click "Mail."

   c) In the "Email apps" section, click "Manage email apps."

   d) Verify that the Authenticated SMTP setting is enabled.

   e) Once you're finished, click "Save changes."

For additional information and support, you can refer to the official Microsoft documentation linked below:

Reference - [https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/authenticated-client-smtp-submission](https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/authenticated-client-smtp-submission)

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