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# format: # <rule> <action> <message> # <action> is the usual REJECT DUNNO DEFER... stuff # # <rule> : <attribute> <operator> <comparsion> # <attribute> is one of postfix policy access attributes (http://www.postfix.org/SMTPD_POLICY_README.html#protocol) # <operator> is one of: # == equals # != differs from # > larger than # < smaller than # ~= matches regex # <comparison> is either a quoted string or an integer # # rules can be ANDed with && and ORed with || or negated with ! # regex can be compiled case insensitive by adding i after the closing slash # # Example # client_name == "unknown" && helo_name~=/^\[[0-9a-fA-F:.]+\]$/ REJECT No FcrDNS and address literal HELO - Who are you?b IDATxytVսϓ22 A@IR:hCiZ[v*E:WũZA ^dQeQ @ !jZ'>gsV仿$|?g)&x-E