On Sat, Dec 17, 2005 at 04:17:45PM +0100, Jeroen van Wolffelaar wrote: > On Sat, Dec 17, 2005 at 04:07:51PM +0100, Marc Haber wrote: > > On Fri, Dec 09, 2005 at 01:12:56AM +0100, Jeroen van Wolffelaar wrote: > > > I'm quite sure it's an exim bug, but haven't quite nailed it yet. The > > > bug has been witnessed positively both on master.d.o and on > > > one mailserver I maintain. Interestingly, it doesn't seem to be IPv6 > > > related (or maybe there are two bugs). > > > > It might be DNS related. Can you comment about > > http://www.exim.org/mail-archives/exim-users/Week-of-Mon-20051212/msg00196.html > > please? > > That sounds very much like the cause of this bug. It's also possible > even for IPv4 issues like the one in my original bugreport, as also in > that case, TTL's were distinct, and indeed, the situation could arrise > that a DNS query would give only partial results in the additional > section, because of the setup of the involved DNS servers.
I agree with that. I filed the message for exim-users before reviewing your bug report, so I'll have to mention the possibility of this happening in a v4-only setup later. But first I'll wait for Philip to comment. > So, it seems like the logic error is in that the additional DNS section > is believed to be complete, which is not at all guaranteed to be true -- > it can be partial for any reason. Right. > Thanks a lot for finding the (IMHO) most logical cause of this bug, Florian had a big part in this, we spent the better part of this afternoon over DNS queries and DNS output on IRC. Without his help, this wouldn't have been possible. Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Mannheim, Germany | lose things." Winona Ryder | Fon: *49 621 72739834 Nordisch by Nature | How to make an American Quilt | Fax: *49 621 72739835 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
