Checking 'From' address

[Andrew Richards]

Hi,

Question from a Qmail virgin...

I see that qmail-smtpd has a 'badmailfrom' option to refuse
specified addresses and domains in the sender address. Does
the opposite exist, i.e. something like a 'goodmailfrom' where
you could list the valid sender addresses/domains, and refuse
anything else?

cheers,

Andrew Richards.