diff -urN old/networking/sendmail.c new/networking/sendmail.c
--- old/networking/sendmail.c	2008-06-25 20:51:14.000000000 +0800
+++ new/networking/sendmail.c	2010-07-08 18:34:05.587946000 +0800
@@ -372,8 +372,8 @@
 
 		// introduce to server
 		// we should start with modern EHLO
-		if (250 != smtp_checkp("EHLO %s", opt_from, -1)) {
-			smtp_checkp("HELO %s", opt_from, 250);
+		if (250 != smtp_checkp("EHLO %s", "Vigor", -1)) {
+			smtp_checkp("HELO %s", "Vigor", 250);
 		}
 
 		// set sender
