--- src/compose.c.orig	2011-01-07 09:35:22.000000000 +0300
+++ src/compose.c	2011-01-31 13:27:29.473990831 +0300
@@ -4735,6 +4735,7 @@
 	}
 
 	/* Program version and system info */
+	/* useragent disable begin
 	if (prefs_common.user_agent_str) {
 		if (compose->to_list && !IS_IN_CUSTOM_HEADER("X-Mailer")) {
 			fprintf(fp, "X-Mailer: %s\n",
@@ -4745,6 +4746,7 @@
 				prefs_common.user_agent_str);
 		}
 	}
+	useragent disable end */
 
 	/* custom headers */
 	if (compose->account->add_customhdr) {

.