---
title: How to troubleshoot SMTP settings for office 365
description:      
---

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# How to troubleshoot SMTP settings for office 365

- Make sure that 2 Factor authentication or Multi factor authentication is disabled for the email id being used.

1. Open the [Office 365 admin center](https://portal.office.com/adminportal/home).
2. Go to **Users \> Active users**.
3. Click on **Multi-factor authentication** tab option (in new admin center).
4. Select your user
5. Click **Disable** on the right side under **quick steps** option.

 

- Make sure to enable SMTP Authentication for the email address used.

1. Open the Office 365 admin center.
2. Click the Users option from the menu to the left, then choose Active users.
3. Select the user, and in the menu that pops out to the side, click the Mail tab.
4. Click Manage email apps under the Email apps option.
5. Verify the Authenticated SMTP setting, and click Save.

 

- In case if the option mentioned above is not available in the Admin center, please follow the below steps.

 

1. Use Microsoft exchange online powershell and use the script below to enable the SMTP Authentication
2. “Set-CASMailbox -Identity \<MailboxIdentity\> -SmtpClientAuthenticationDisabled $false”
3. Where the \<MailboxIdentity\> is the mail id for which the SMTP authentication is to be enabled for.

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