Title: Undefined array key ip_blacklist
Last modified: May 10, 2025

---

# Undefined array key ip_blacklist

 *  Resolved [Ov3rfly](https://wordpress.org/support/users/ov3rfly/)
 * (@ov3rfly)
 * [1 year ago](https://wordpress.org/support/topic/undefined-array-key-ip_blacklist/)
 * Getting these warnings in `debug.log` when opening Antispam Blacklists settings:
 *     ```wp-block-code
       [10-May-2025 09:09:56 UTC] PHP Warning:  Undefined array key "ip_blacklist" in .../wp-content/plugins/newsletter/subscription/antispam.php on line 12[10-May-2025 09:09:56 UTC] PHP Deprecated:  preg_split(): Passing null to parameter #2 ($subject) of type string is deprecated in .../wp-includes/functions.php on line 4924
       ```
   
 * It seems that feature has been changed compared to previous versions of the plugin.
   The [plugin description](https://www.thenewsletterplugin.com/documentation/subscription/antiflood/#email-blacklist)
   describes two textareas for _IP black list_ and _Address black list_ while current
   version of the plugin only shows one area _Address blacklist_.
 * Newsletter 8.8.2

Viewing 1 replies (of 1 total)

 *  Plugin Support [Michael Travan](https://wordpress.org/support/users/michael-travan/)
 * (@michael-travan)
 * [1 year ago](https://wordpress.org/support/topic/undefined-array-key-ip_blacklist/#post-18460993)
 * Hello [@ov3rfly](https://wordpress.org/support/users/ov3rfly/),
 * thanks for reporting, I’ve passed this to our developers for further evaluation.
 * Regards, 
   Michael

Viewing 1 replies (of 1 total)

The topic ‘Undefined array key ip_blacklist’ is closed to new replies.

 * ![](https://ps.w.org/newsletter/assets/icon-256x256.png?rev=1052028)
 * [Newsletter - Send awesome emails from WordPress](https://wordpress.org/plugins/newsletter/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/newsletter/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/newsletter/)
 * [Active Topics](https://wordpress.org/support/plugin/newsletter/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/newsletter/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/newsletter/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Michael Travan](https://wordpress.org/support/users/michael-travan/)
 * Last activity: [1 year ago](https://wordpress.org/support/topic/undefined-array-key-ip_blacklist/#post-18460993)
 * Status: resolved