Reverse lookup of selected IP addresses without delegation agreement?
Len Conrad
LConrad at Go2France.com
Thu Jul 15 16:48:11 UTC 2004
>Do I understand correctly that you're suggesting to have my own server
>return lists.sourceforge.net instead of mail.sourceforge.net? Is that
>what you mean by "match official PTR"?
yes, because MTAs like postfix will consider a PTR hostname to be invalid
if the PTR hostname doesn't have matching A record (to catch spammers
forging their PTR as aol.com, which is a PTR hostname probably whitelisted
by a lot of MXs)
Len
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