Am 29.06.2015 um 18:42 schrieb [email protected]:
Hello, this is my first time on the list and would appreciate some help
on a recipe. This may have been answered already as I can't imagine
others not experiencing a similar issue. I've searched google but
haven't found the searchable spamassassin list yet.

My question:
How can I format a recipe that will catch the ".in.net" portion of an IP
as many domain names are used in front of that domain bit?

Any help please?

you could use regex tables on the MTA side
http://www.postfix.org/postconf.5.html

check_reverse_client_hostname_access type:tableSearch the specified access database for the unverified reverse client hostname, parent domains, client IP address, or networks obtained by stripping least significant octets. See the access(5) manual page for details. Note: a result of "OK" is not allowed for safety reasons. Instead, use DUNNO in order to exclude specific hosts from blacklists. This feature is available in Postfix 2.6 and later.

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