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<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-FAMILY: Arial">I have been thinking that I might try to reject mail
that does not have a Ptr.<?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-FAMILY: Arial">Example<SPAN
class=801162515-03032008>:</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="COLOR: #231f20; FONT-FAMILY: Arial">“Non-existent CNAMEReports CNAME of
178.128/25.240.39.12.in-addr.arpa.<BR>12.39.240.178 has no reverse DNS entry;
some mail servers may not accept your mail”<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="COLOR: #231f20; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="COLOR: #231f20; FONT-FAMILY: Arial">If I stop it at the sendmail.mc with
a </SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">FEATURE(`require_rdns')dnl </SPAN><SPAN
style="COLOR: #231f20; FONT-FAMILY: Arial"><SPAN
style="mso-spacerun: yes"> </SPAN>then I will not have any way to track
what I might need to allow.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="COLOR: #231f20; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="COLOR: #231f20; FONT-FAMILY: Arial">If I use the SA RDNS_NONE and
RDNS_DYNAMIC then I waste CPU but get nice reporting.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="COLOR: #231f20; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="COLOR: #231f20; FONT-FAMILY: Arial">What would you guys suggest,<SPAN
style="mso-spacerun: yes"> </SPAN>any other
pitfalls?<o:p></o:p></SPAN></P></DIV></BODY></HTML>