What to Do if Sucuri Unable to Properly Scan Your Site

Laptop with Picket Fence over it: What to do if Sucuri Unable to Properly Scan Your Site

Have you received the error “Sucuri unable to properly scan your site” in your Sucuri dashboard?

You most likely are seeing the following error that is returned by Sucuri when trying to run a scan:

Unable to properly scan your site. Site returning error: HTTP/1.1 503 Service Temporarily Unavailable

The problem occurs because the Sucuri monitor has been unable to connect to your WordPress site.

If you are using the WordFence plugin or a content delivery network such as Cloudflare, the Sucuri IPs are likely being blocked.

If you are not using WordPress, but have your site on Cloudflare, see the instructions below to whitelist the Cloudflare IPs.

If you are still having problems, please check the Sucuri Firewall Troubleshooting Guide.

Steps to Fix Sucuri Unable to Properly Scan Your Site

If your site is on WordPress and you are using WordFence, you’ll need to whitelist Sucuri’s IPs in WordFence settings.

Technology changes and so do IP address ranges.

You will need to contact Sucuri support to obtain the appropriate Sucuri monitor IP for your site.

Troubleshooting Tips for WordFence Users

Whitelist Sucuri IP in WordFence

Once you have the appropriate Sucuri IPs to whitelist, go to your Dashboard>WordFence>Options and scroll down to Other Options.

Then whitelist the Sucuri Security Monitor IP by listing it as shown below.

Save your changes.

Whitelist Sucuri Scanner Monitor

Troubleshooting Tips for Cloudflare Users

Whitelist Sucuri IPs in Cloudflare

If you are still having problems and your site is on Cloudflare, you’ll need to whitelist the Sucuri IPs in Cloudflare.

From the Cloudflare dashboard, go to Firewall > Tools.

In IP Access Rules, enter the Sucuri IP and click “Allow” and “This Website” in the respective drop down boxes.

Cloudflare firewall tools settings

The next time the Sucuri scanner attempts to connect to your website the server will allow it and your scans should run as scheduled.

Print Friendly, PDF & Email

About The Author

Leave a Reply

Notify of
Inline Feedbacks
View all comments
2 years ago

I am trying out Sucuri and not sure I want to invest financially with them or godaddy. I keep getting a message that says, “sucuri unable to scan your site timeout message” any idea what this means?

Andrea Gatley
6 years ago

Thanks for posting this! This fix still works great. 🙂

Michelle Phillips
6 years ago
Reply to  Andrea Gatley

Glad to hear, Andrea ~ thanks for taking time to let me know 🙂

Scroll to Top