Title: Plugin 503 service error
Last modified: August 15, 2020

---

# Plugin 503 service error

 *  Resolved [mattpugs1993](https://wordpress.org/support/users/mattpugs1993/)
 * (@mattpugs1993)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/plugin-503-service-error/)
 * Hello,
 * We are using a mailchimp plugin that we always do for every site. This site throws
   this error:
 * This means that the IP address that your hosting provider uses for outbound cURL
   connections made by PHP is blacklisted by the Akamai firewall. Akamai is the 
   firewall Mailchimp and many other major websites use to protect their servers,
   which is why this is somewhat harder to fix.
 * Note that many hosting providers use shared IP addresses, meaning that your website
   IP is shared with a number of their users. It’s possible that another client 
   of your hosting provider did something to get the IP blacklisted, completely 
   out of your control.
 * After checking my IP address with [https://mxtoolbox.com](https://mxtoolbox.com)
   it shows it is not blocked.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fplugin-503-service-error%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Contributor [Lap](https://wordpress.org/support/users/lapzor/)
 * (@lapzor)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/plugin-503-service-error/#post-13262055)
 * MX Toolbox doesn’t show if your IP is listed by Akamai firewall. I don’t think
   any place does.
 * I recommend asking your hosting provider for another IP address or buying your
   own private ip for the website.
 * Hope that helps. If you have any questions, please let me know!
 *  Thread Starter [mattpugs1993](https://wordpress.org/support/users/mattpugs1993/)
 * (@mattpugs1993)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/plugin-503-service-error/#post-13262736)
 * This is the response I got from my hosting provider:
 * ”
    Hi,
 * The shared IP that your website uses is actually not the issue here. Even if 
   a new dedicated IP is assigned on your account, all outgoing requests for the
   website will go through the server IP as this is the way outgoing connections
   work on our server environment.
 * The MailChimp request is blocked for the server IP and not your shared IP address.
 * In regards to your other websites, they do not have the same problem since they
   are located on a different server than the current website nowtownsbrooklin.com.
   “
 *  Plugin Contributor [Harish Chouhan](https://wordpress.org/support/users/hchouhan/)
 * (@hchouhan)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/plugin-503-service-error/#post-13263420)
 * Hey [@mattpugs1993](https://wordpress.org/support/users/mattpugs1993/),
 * That is a bit strange response since they need to setup the server so that all
   requests are made from the dedicated if any assigned to you.
 * I regret to say there is not much we can do about this from our end.
 *  Thread Starter [mattpugs1993](https://wordpress.org/support/users/mattpugs1993/)
 * (@mattpugs1993)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/plugin-503-service-error/#post-13264268)
 * Is there anyway to get that specific IP Address off the blacklist?
 *  Plugin Contributor [Harish Chouhan](https://wordpress.org/support/users/hchouhan/)
 * (@hchouhan)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/plugin-503-service-error/#post-13266442)
 * Hey [@mattpugs1993](https://wordpress.org/support/users/mattpugs1993/),
 * Please note that we are not MailChimp.com. We are a different company. Only MailChimp.
   com can remove the IP off their black list but I doubt they will do it.

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Plugin 503 service error’ is closed to new replies.

 * ![](https://ps.w.org/mailchimp-for-wp/assets/icon-256x256.png?rev=1224577)
 * [MC4WP: Mailchimp for WordPress](https://wordpress.org/plugins/mailchimp-for-wp/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/mailchimp-for-wp/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/mailchimp-for-wp/)
 * [Active Topics](https://wordpress.org/support/plugin/mailchimp-for-wp/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/mailchimp-for-wp/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/mailchimp-for-wp/reviews/)

## Tags

 * [plugin error](https://wordpress.org/support/topic-tag/plugin-error/)

 * 5 replies
 * 3 participants
 * Last reply from: [Harish Chouhan](https://wordpress.org/support/users/hchouhan/)
 * Last activity: [5 years, 9 months ago](https://wordpress.org/support/topic/plugin-503-service-error/#post-13266442)
 * Status: resolved