Only in dovecot-0.99.12/src/master: core
diff -ru dovecot-0.99.12/src/pop3/commands.c dovecot-0.99.13/src/pop3/commands.c
--- dovecot-0.99.12/src/pop3/commands.c	2004-11-30 12:34:01.000000000 +0200
+++ dovecot-0.99.13/src/pop3/commands.c	2004-12-07 03:13:00.000000000 +0200
@@ -292,6 +292,9 @@
 		/* didn't end with CRLF */
 		(void)o_stream_send(output, "\r\n", 2);
 	}
+
+	if (in_header)
+		(void)o_stream_send(output, "\r\n", 2);
 }
 
 static void fetch(struct client *client, unsigned int msgnum,
Binary files dovecot-0.99.12/src/pop3/commands.o and dovecot-0.99.13/src/pop3/commands.o differ
Binary files dovecot-0.99.12/src/pop3/pop3 and dovecot-0.99.13/src/pop3/pop3 differ