smtpd & soft_bounce

[Patrick H.]

I was attempting to set soft_bounce=yes on the smtpd service in 
master.cf only to find that it didnt work. This was unexpected as the 
man pages indicate otherwise. 'man 8 smtpd' lists soft_bounce under 
'trouble shooting controls'. But I've found that instead it works when 
placed on the 'smtp' service in master.cf (or in main.cf). My question 
is why? I mean it makes sense as its a delivery option, but still the 
mange pages indicate its an option of smtpd and the smtp man page 
mentions nothing about it.