Kevin A. McGrail wrote:
I'm looking at the built-in Macros and the _ macro in the SendmailMacros hash looks like a possibility to replace doing a reverse lookup on hosts. The theory being (and someone else has mentioned this) that this portion of my reverse DNS check in the milter is duplicative of a reverse PTR lookup.
But you are already given the result of Sendmail's reverse-lookup in the $hostname argument to filter_relay and friends, and it's in the $RelayHostname global variable after filter_begin. But even if you make a duplicate DNS lookup, it should be fast because the answer is cached (you ARE running a caching DNS server, right? :-)) Regards, David. _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
