diff --git a/lib/domains/stoplist.txt b/lib/domains/stoplist.txt
index e4aa4f733c..3c3043a76f 100644
--- a/lib/domains/stoplist.txt
+++ b/lib/domains/stoplist.txt
@@ -659,4 +659,5 @@ asu.edu.eg
 alumni.msoe.edu
 newcastle.ac.uk
 whitecaps.gc.edu
-mail.chzu.edu.cn
\ No newline at end of file
+mail.chzu.edu.cn
+sm.imamu.edu.sa
\ No newline at end of file