Sometime on Feb 11, SP assembled some asciibets to say:
I tried to search the net all over for this setting, but no success.
maybe if you looked at http://www.sendmail.org/. Last time I checked that was also part of the net. I do not have available a ready made solution for you, and it isn't worth it for me to explore this any further at this time. I've given you all the information you need to construct your answer, so I'd expect you to do a little experimentation now and come up with one.