diff --git a/lib/domains/stoplist.txt b/lib/domains/stoplist.txt
index 318573e63f..a3e4867960 100644
--- a/lib/domains/stoplist.txt
+++ b/lib/domains/stoplist.txt
@@ -1403,4 +1403,5 @@ fgs.ju.edu.jo
 cqu.edu.cn
 nwacc.edu
 umm.edu.mx
-sas-sd.net
\ No newline at end of file
+sas-sd.net
+cotcmail.cotc.edu
\ No newline at end of file