OpenCart Office 365 SMTP Settings

Mail EngineSMTP
SMTP Hostnametls://
SMTP UsernameMicrosoft 365 email address (example [email protected])
SMTP PasswordMicrosoft 365 user password
SMTP Port587
SMTP Timeout5

Disable the Azure Security Defaults by toggling the “Enable Security Defaults” to “No”

Sign in to the Azure portal as a security administrator, Conditional Access administrator, or global administrator. Browse to Azure Active Directory > Properties. Select Manage security defaults. Set the Enable security defaults toggle to No. Select Save.

Enable SMTP Authentication

Go to Microsoft 365 Admin Center > Active Users

Disable Multi-Factor Authentication (MFA) 

In the Microsoft 365 Admin Center, in the left navigation menu choose Users > Active users. On the Active Users page, choose Multi-factor authentication. On the multi-factor authentication page, select the user, and disable the Multi-Factor auth status.