> I have a bind9 named running on the 4.x stable branch, and have noticed > that it seems to be sending udp packets to 127.0.0.2:52 about once > every 10 seconds or so (ipfw is denying and logging the traffic). > Google has not shed any light on the subject.
127.0.0.2 is often returned by RBLs, when an address is blocked (a.k.a. listed as spam source): http://www.spamhaus.org/sbl/howtouse.html http://www.mail-abuse.org/rbl/usage.html Quoth the previous URL (mail-abuse.org): "The theory of operation is simple. Given a host address in its dotted-quad form, reverse the octets and check for the existence of an ``A RR'' at that node under the blackholes.mail-abuse.org node. So if you get an SMTP session from [220.127.116.11] you would check for the existence of: 18.104.22.168.blackholes.mail-abuse.org. IN A 127.0.0.2 We chose to use an ``A RR'' because that's what Sendmail makes easy to do. The choice of [127.0.0.2] as the target address was arbitary but will not change. As it happens, we supply a bogus MAPS RBLSM entry for [127.0.0.2] so that mail transport developers have something to test against. If an ``A RR'' is found by this mechanism, then there will also be a ``TXT RR'' at the same DNS node. The text of this record will be suitable for use as a reason text for a bounced mail notification. Currently the text is constant and currently there is no way to use it from Sendmail, but there it is anyway." Perhaps you have a mail filter installed, which queries one of those RBLs, and then tries to do a reverse DNS lookup for 127.0.0.2? > I've grepped all through /etc/, and have found no references to > 127.0.0.2, and I certainly don't remember configuring anything (ever) > with that particular address. > > What could be the cause of this mysterious bind behavior? See above. -- Cordula's Web. http://www.cordula.ws/ _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"