diff --git a/lib/domains/stoplist.txt b/lib/domains/stoplist.txt
index 5d7c130dca..9ebb701dde 100644
--- a/lib/domains/stoplist.txt
+++ b/lib/domains/stoplist.txt
@@ -495,4 +495,5 @@ my.smccd.edu
 dragons.hutchcc.edu
 cihanuniversity.org
 stu.hit.edu.cn
-mails.tsinghua.edu.cn
\ No newline at end of file
+mails.tsinghua.edu.cn
+deltacollege.edu
\ No newline at end of file