diff --git a/lib/domains/blacklist.txt b/lib/domains/blacklist.txt
index af7bb59033..483b7d2c5d 100644
--- a/lib/domains/blacklist.txt
+++ b/lib/domains/blacklist.txt
@@ -56,3 +56,4 @@ mail.dream.edu.kg
 sierracollege.edu
 sss.edu.bi
 stu.shzu.edu.cn
+mail.wcccd.edu