diff --git a/lib/domains/blacklist.txt b/lib/domains/blacklist.txt
index 0e55759316..cce83eea1f 100644
--- a/lib/domains/blacklist.txt
+++ b/lib/domains/blacklist.txt
@@ -104,7 +104,6 @@ bbc.edu.cn
 student.cccs.edu
 fountaingatesc.vic.edu.au
 edu.tanta.edu.eg
-std.uestc.edu.cn
 mail.ltcc.edu 
 student.ksu.edu.sa
 vip.henu.edu.cn