Olivier Nicole wrote: >>I believe the only check that for instance sendmail could do, is to >>check if a lookup of the ip gives the hostname, and if the hostname >>lookup doesnt give the IP, then it can block the message. But in >>real life, there are so many situations where this is not the case, >>that blocking that scenario would block way too much legitimate email. > > > I wonder how it happened actually. Only way would be that the machine > with 216.139.180.4 connected to your mail server and started the > dialog with HELO and your own mailserver name. > > Now I see no reason why in real life one should accept such case. I'd > say that in real life I only accept connection from machine with valid > DNS and reverse DNS.
Sadly ISP's aren't as on-the-ball as you are. I've been trying for months to get my ISP to setup reverse DNS for sergeant.org and still to no avail. So you'd be blocking mail from one of the SpamAssassin developers. Matt. ------------------------------------------------------- This sf.net email is sponsored by: Jabber Inc. Don't miss the IM event of the season | Special offer for OSDN members! JabberConf 2002, Aug. 20-22, Keystone, CO http://www.jabberconf.com/osdn _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
