diff -urN sendmail.orig/conf.h sendmail/conf.h
--- sendmail.orig/conf.h	2002-10-31 05:28:36.000000000 +0200
+++ sendmail/conf.h	2004-11-08 20:28:17.000000000 +0200
@@ -60,7 +60,8 @@
 **********************************************************************/
 
 #define MAXLINE		2048		/* max line length */
-#define MAXNAME		256		/* max length of a name */
+//#define MAXNAME		256		/* max length of a name */
+#define MAXNAME		1024		/* max length of a name */
 #ifndef MAXAUTHINFO
 # define MAXAUTHINFO	100		/* max length of authinfo token */
 #endif /* ! MAXAUTHINFO */