Hi, I realize that all docs/man pages suggest that the sender command line argument/macro as described in pipe(8) does not resolve to multiple addresses (as opposed to ${recipient}, for example).
However, it isn't noted that it actually can never be multiple addresses, so I'd just like confirmation that in fact, the ${sender} command line argument could only ever be a single email address (for obvious reasons of parsing, argument processing, etc.). One other quick note (somewhat unrelated): http://www.postfix.org/pipe.8.html ${original_recipient} is present and differentiated from ${recipient}... The latest version of postfix on CentOS (as determined by yum upgrade): # postconf mail_version mail_version = 2.3.3 ... has apparently no notion of ${original_recipient}. Just curious as if this is actually deprecated, or if CentOS' version is lagging. Thanks much, H