urlichs@smurf.sub.org (Matthias Urlichs) (03/07/91)
I had the following MXes in the primary record for domain sub.org: foo.bar MX 90 some.forwarder * MX 100 some.other.forwarder Now I fire up nslookup and do the following: > set typ=mx > xyzzy.sub.org [ found some.other.forwarder ] > foo.bar.sub.org [ found some.forwarder ] So far so good. However, > bar.sub.org [ problem - host not found ] > plugh.bar.sub.org [ problem - no information ] What gives? NB: The descriptions are from memory, but essentially correct (I think). Since the practical effect of all this is that nobody can send any mail to anybody.bar.sub.org (if anybody != foo), it's not a problem with nslookup. Workaround: Add explicit MXes for bar.sub.org and *.bar.sub.org, pointing to some.other.forwarder. -- Matthias Urlichs -- urlichs@smurf.sub.org -- urlichs@smurf.ira.uka.de /(o\ Humboldtstrasse 7 - 7500 Karlsruhe 1 - FRG -- +49+721+621127(0700-2330) \o)/
thorinn@RIMFAXE.DIKU.DK (Lars Henrik Mathiesen) (03/07/91)
From: smurf!urlichs@ira.uka.de (Matthias Urlichs) I had the following MXes in the primary record for domain sub.org: foo.bar MX 90 some.forwarder * MX 100 some.other.forwarder > bar.sub.org [ problem - host not found ] > plugh.bar.sub.org [ problem - no information ] What gives? From RFC 1034 (Domain Concepts and Facilities): Wildcard RRs do not apply: - When the query name or a name between the wildcard domain and the query name is know to exist. So your nameserver does what it's supposed to. (It's not a bug, it's a feature :-). Workaround: Add explicit MXes for bar.sub.org and *.bar.sub.org, pointing to some.other.forwarder. Well, that's life. -- Lars Mathiesen, DIKU, U of Copenhagen, Denmark [uunet!]mcsun!diku!thorinn Institute of Datalogy -- we're scientists, not engineers. thorinn@diku.dk
onoe@sm.sony.co.jp (Atsushi Onoe) (03/12/91)
In article <"1f[h2.1$8@smurf.sub.org> urlichs@smurf.sub.org (Matthias Urlichs) writes: > I had the following MXes in the primary record for domain sub.org: > > foo.bar MX 90 some.forwarder > * MX 100 some.other.forwarder There needs more two entries as follows, bar MX 100 some.other.forwarder *.bar MX 100 some.other.forwarder The domain bar.sub.org has no records, but the label exists. So the name bar.sub.org or plugh.bar.sub.org cannot match to *.bar.sub.org -- Atsushi Onoe <onoe@sm.sony.co.jp> Workstation Div., Supermicro Systems Group, Sony Corporation