IP Address Has Changed! Error When Using Webmail

The error IP Address Has Changed can occur in cPanel and its webmail if your IP addresses changes often due to a weak dhcp lease with your ISP. This can also occur if you log into the same account via two different devices at the same time which have two different IPs. This raises a security flag and blocks you out with the error as a protection service from hackers.

  1. Login into cPanel and WHM.
  2. Click on “Main” -> “Server Configuration” -> “Tweak Settings” -> “Security Tab”.
  3. Look for “Cookie IP Validation” and change the setting to "loose". 
  4. Disable proxy domains also in the Tweak Settings area.
  5. Clear your web browser’s cache and login into cPanel like normal.



  • 142 Users Found This Useful

Was this answer helpful?

Related Articles

Mozilla Thunderbird and Email Forwarding

The default forwarding method of Mozilla Thunderbird can result in servers blocking emails as...

What is a email mailing list?

A mailing list is a collection of email addresses which are assigned to a single name for faster...

What is POP3 Email and why do I need it?

A POP3 email address is a standard email address, such as the one you may already have with your...

Do you support IMAP?

Yes! We support IMAP. You can also set your mailbox to whatever size you like, which uses your...

What are my mail server names?

Your mail server names are mail.yourdomain.com. The server name will be the same no matter how...