1 files changed, 1 insertions, 0 deletions
diff --git a/smtp.h b/smtp.h
index bc0d9e40..1dfe7019 100644
--- a/smtp.h
+++ b/smtp.h
@@ -18,6 +18,7 @@
 #define ESMTP_8BITMIME	0x01
 #define ESMTP_SIZE	0x02
 #define ESMTP_ETRN	0x04
+#define ESMTP_ATRN	0x08		/* used with ODMR, RFC 2645 */
 
 void SMTP_setmode(char);
 int SMTP_helo(int socket,const char *host);