diff --git a/mail/postfix/client_checks b/mail/postfix/client_checks
index b95bd66..5ec231f 100644
--- a/mail/postfix/client_checks
+++ b/mail/postfix/client_checks
@@ -8,3 +8,4 @@
 82.196.20.0/24 REJECT Rejected due to excessive spam from your ISP. If in error, email abuse@nodevine.net from a commonly used email service such as Gmail with details.
 112.90.183.139 REJECT Rejected due to excessive spam from your ISP. If in error, email abuse@nodevine.net from a commonly used email service such as Gmail with details.
 23.247.14.0/24 REJECT Rejected due to excessive spam from your ISP. If in error, email abuse@nodevine.net from a commonly used email service such as Gmail with details.
+23.108.243.0/24 REJECT Rejected due to excessive spam from your ISP. If in error, email abuse@nodevine.net from a commonly used email service such as Gmail with details.