Angus March: > > If there is an ERROR, the Postfix sendmail command will NOT enqueue > > the message, and it will return a non-zero exit status code as > > defined in /usr/include/sysexits.h.
> sendmail: fatal: No recipient addresses found in message header That is an ERROR. The Postfix sendmail command will NOT enqueue the message, and it will return a non-zero exit status code as defined in /usr/include/sysexits.h. Wietse