Thanks Bob, and I apologize for the oversite. I forgot to put mailbox.h into the jnosX rsync area. Try it again. > two errors in your new forward.c MboxIdB1F & MBX_FBBCMP undeclared. The mailbox.h will take care of that. You need B2F defined of course, since the B1F protocol uses the same checksum routines as B2F does. Maiko