Description: Make control socket mode 0660

--- a/sendmail/control.c
+++ b/sendmail/control.c
@@ -138,7 +138,7 @@ opencontrolsocket()
 		}
 	}
 
-	if (chmod(ControlSocketName, S_IRUSR|S_IWUSR) < 0)
+	if (chmod(ControlSocketName, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) < 0)
 	{
 		save_errno = errno;
 		closecontrolsocket(true);
