most of them are empty by default iirc.
is no value is given, afaik the default is permit. That's why the
default value of smtpd_relay_restrictions is not empty by
edfault
smtpd_client_restrictions = permit_mynetworks, reject
Yes the default value is empty and so to allow all connections but that
doesn't mean that that behavior is the same if the attribute isn't
empty. That's not 100 percent clear in the documentation.
Does that mean if I don't put some kind of 'reject' rule at the end all
the rules aren't restricting anything because I have a default allow at
the end anyway?
