SMTP error while using PHPMailer with GMail Authentication

Problem Statement


One of our Linux VPS customer was unable to send emails through PHPMailer script with Gmail's authentication.

Solution


After some investigation, we could fix the issue taking following steps.
  1. Login to WHM.
  2. Navigate to ConfigServer Security & Firewall.
  3. Click on Firewall Configuration.

    Firewall Configuration


  4. Locate the option SMTP_Block and set to '0'.

    Change SMTP Block Option

  5. Click on Change button.

  • 0 Users Found This Useful

Was this answer helpful?

Related Articles

How to install ConfigServer Firewall to cPanel/WHM?

The ConfigServer Firewall - CSF is one of the most popular and advanced firewall suite available...

How to install ConfigServer Explorer to cPanel/WHM?

Undoubtedly, WHM has been the most comprehensive control panel of all time for Linux based...

How to install CloudFlare cPanel plugin in WHM?

CloudFlare plugin integrates CloudFlare services with cPanel server and allows your customers to...

How to Allow Remote Connection to MySQL Server in cPanel/WHM Server?

To prevent potential security risks to MySQL server, by default remote MySQL connections are...

How to Install SSL Certificate on WHM/cPanel Services?

By default, all WHM/cPanel services use self signed certificate and you get warning while using...