Hi all

Im using

FEATURE(dnsbl,`spam.dnsrbl.net')dnl

and also have published an spf record and are rejecting based on spf
records.

I notice Im still recieving mail from domains where the domain does resove
but the MX records for the domain dont. Is there are way to reject these.
Other good sendmail based anti-spam techniques?

note: we have "smart" antispam filter further inside the network. The above
is just for a border sendmail installation where I want reject as much spam
based on unresolvable hosts and user named as much as possible.

thanks

BB
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