No need for this - bell-labs specific and smtpd.conf is just
as good an example.

Use "fax" as machine name.
 [rsc] --rwxrwxr-x M 191333 glenda sys 2385 Sep 22 09:11 rc/bin/fax
	/n/sourcesdump/2005/0922/plan9/rc/bin/fax:120,126 - 
	/n/sourcesdump/2005/0923/plan9/rc/bin/fax:120,126
	  switch($view){
	  case no
	  	upas/qer $files /mail/faxoutqueue fax $user $telno < /dev/null
	- 	rx boundary /sys/lib/fax/faxgoose
	+ 	rx fax /sys/lib/fax/faxgoose
	  case yes
	  	page $header.* $g3files
	  }