for -t cmdline args are now added to the rcpt list instead of substracted Please read the diff and the section about -t in man/masqmail.8. Masqmail's behavior had been like the one of exim/smail, now it's similar to postfix. Masqmail does it now the most simple way, regarding the code. Also, addr args are always recipients, -t does not change their meaning. -t makes the addrs from rcpt hdrs, rcpt addrs too. It would have been logical too, to ignore the cmdline args, in the sense of ``headers *instead of* args'' but none of the popular MTAs does it that way and it would have been a bit more complicated in the code. Anyway, this is a corner-case that should better be avoided completely.