$OpenBSD: patch-src_common_smtp_h,v 1.3 2005/04/12 20:29:26 naddy Exp $
--- src/common/smtp.h.orig	Sun Apr  3 15:14:42 2005
+++ src/common/smtp.h	Sun Apr  3 15:15:18 2005
@@ -32,7 +32,9 @@ typedef struct _SMTPSession	SMTPSession;
 
 #define SMTP_SESSION(obj)	((SMTPSession *)obj)
 
-#define MSGBUFSIZE		8192
+#ifndef MSGBUFSIZE
+#  define MSGBUFSIZE		8192
+#endif
 
 typedef enum
 {
