diff --git a/lib/domains/blacklist.txt b/lib/domains/blacklist.txt
index 0302a958e4..a069a80192 100644
--- a/lib/domains/blacklist.txt
+++ b/lib/domains/blacklist.txt
@@ -104,4 +104,5 @@ student.cccs.edu
 fountaingatesc.vic.edu.au
 edu.tanta.edu.eg
 std.uestc.edu.cn
-mail.ltcc.edu 
\ No newline at end of file
+mail.ltcc.edu 
+student.ksu.edu.sa
\ No newline at end of file