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

Fix :: Unable to add domain in cPanel that points to some other server

Problem Statement Unable to add domain (which is not pointing to cPanel server.) in cPanel...

Fix - cPanel Account Restore Failed: Failed to create the account. A database owner with the name “cpaneluser” already exists

One of our customers was migrated from another cPanel host. While restoring his account to our...

How to install CloudFlare cPanel plugin in Linux VPS?

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

Fix - Unknown address error 550-Verification failed in exim

One of our Linux VPS customers faced the problem wherein the customer was unable to receive...

How to set the backup configuration in WHM?

You should consider taking the Backup of your cPanel data at a regular interval. cPanel provides...