Hello folks
My server's syslog is filling up with errors from named like this (sorry 
about the wrapping)
-----
named[1874]: FORMERR resolving 'ns35.1und1.de/A/IN': 195.74.96.35#53
named[1874]: FORMERR resolving 'ns36.1und1.de/A/IN': 195.74.96.35#53
named[1874]: FORMERR resolving '34.200.201.193.sbl.spamhaus.org/TXT/IN': 
195.74.96.34#53
named[1874]: FORMERR resolving 'ns35.1und1.de/A/IN': 195.74.96.20#53
named[1874]: FORMERR resolving 'ns36.1und1.de/A/IN': 195.74.96.20#53
named[1874]: unexpected RCODE (SERVFAIL) resolving 
'190.173.56.69.sbl.spamhaus.org/TXT/IN': 195.74.96.173#53
named[1874]: FORMERR resolving '34.200.201.193.sbl.spamhaus.org/TXT/IN': 
195.74.96.35#53
named[1874]: FORMERR resolving '45.159.47.78.sbl.spamhaus.org/TXT/IN': 
195.74.96.34#53
named[1874]: unexpected RCODE (SERVFAIL) resolving 'ns35.1und1.de/A/IN': 
195.74.96.173#53
named[1874]: unexpected RCODE (SERVFAIL) resolving 'ns36.1und1.de/A/IN': 
195.74.96.173#53
named[1874]: unexpected RCODE (SERVFAIL) resolving 
'34.200.201.193.sbl.spamhaus.org/TXT/IN': 195.74.96.173#53
named[1874]: unexpected RCODE (SERVFAIL) resolving 
'45.159.47.78.sbl.spamhaus.org/TXT/IN': 195.74.96.173#53
named[1874]: FORMERR resolving '34.200.201.193.sbl.spamhaus.org/TXT/IN': 
195.74.96.20#53
named[1874]: FORMERR resolving '45.159.47.78.sbl.spamhaus.org/TXT/IN': 
195.74.96.35#53
named[1874]: FORMERR resolving '45.159.47.78.sbl.spamhaus.org/TXT/IN': 
195.74.96.20#53
-----
DNS lookups are still basically working, although I have been noticing 
occasional 'pauses' that might be caused by DNS timeouts.
These errors seem to happen for all sorts of lookups -- web pages or 
mail servers etc.  Some of the error lines have /AAAA/IN instead of 
/A/IN, although I'm not using IPv6.
I'm not sure when it started happening -- I've been trying to solve it 
for a few days, and my logs only go back 7 days.
The server is running up-to-date Debian Etch, with a 2.6.6 kernel. 
Bind9 is at version 9.3.4-etch2, and hasn't been updated since 
September; no newer updates are available.
/etc/default/bind9 contains: OPTIONS="-4 -u bind".  Adding the -4 didn't 
make any difference.
Much Googling etc. has failed to find a relevant answer.
Can anyone shed any light?
cheers
Chris
-- 
Chris Dennis                                  cgdennis@???
Fordingbridge, Hampshire, UK