diff --git a/mailvalidate/role_account.go b/mailvalidate/role_account.go
index 0e1742f..32b65b1 100644
--- a/mailvalidate/role_account.go
+++ b/mailvalidate/role_account.go
@@ -30,7 +30,7 @@ func IsRoleAccountCheck(email string, roleAccounts *RoleAccounts) (bool, error)
 	}
 
 	for _, value := range roleAccounts.Contains {
-		if strings.Contains(value, user) || strings.Contains(user, value) {
+		if strings.Contains(user, value) {
 			return true, nil
 		}
 	}
diff --git a/mailvalidate/role_emails.toml b/mailvalidate/role_emails.toml
index 999dd46..0fc4bb1 100644
--- a/mailvalidate/role_emails.toml
+++ b/mailvalidate/role_emails.toml
@@ -50,6 +50,7 @@ matches = [
   'lab',
   'labs',
   'md',
+  'mt',
   'no',
   'pay',
   'pd',
@@ -455,7 +456,6 @@ contains = [
   'moreinfo',
   'msstaff',
   'msteachers',
-  'mt',
   'music',
   'myplex',
   'namecheap',