You want to bypass a mail system?
o Has your company a badly configured mailer who copies bounces
  to the local postmaster? Do you dislike this?
o Maybe your compary has a very stupidly configured mail system which
  does bad things to your messages?
o Is the mail system simply broken?
smtpblast can help you. 

smtpblast uses qmail compatible exitcodes. See the manualpage for
details.

Use it like this:
	smtpblast -f me@domain.example -t recipient@another.example \
		[-i inputfilename] [-r relayhost] [-p port]
Without the -i option smtpblast will read from stdin. That's the
right behaviour for your .qmail file.
Without the -r option smtpblast will ask the domain name server
about the best MX for the target host. This may or may not be
what you want.
With -p you can tell smtpblast to connect to a port number 
different from 25 (standard SMTP). Use this together with
e.g. the SSH port forwarding mechanism or nonstandard SMTP
server ports to bypass a packet filter.