Internal sendmail problems
mark at blackmans.org
Thu Jan 3 09:50:29 GMT 2008
On 2 Jan 2008, at 18:08, O'Connor, Kevin wrote:
> >The correct solution is to fix the broken DNS server that is
> >returning ServFail instead of NXDOMAIN on AAAA lookups. IPv6 RFCs
> >have been published for about 15 years so it's a sign of very
> >shoddy resolver software if it can't DTRT as of this late date.
> That just sounds like a polite way of saying "Throw the MS DNS in
> the bin" which is sadly not an option.
> I'll stick with my kludge of using an alias as a relay for all mail
> so that sendmail does not need to query DNS.
I *think* the resolver code/server bug is only tripped if sendmail
can do inet6 and I suspect there's more than one way to persuade
not to think about inet6.
* recompile sendmail with WITHOUT_INET6
* possibly the uncommenting mentioned, but that's a long shot
* deleting any ipv6 addresses on your interfaces
your alias approach may mean less overall work though.
> BIND has a nightmare time synchronising zones from MS DNS due to
> the non-standard record types they stick in the file so I'm not
> sure running a local DNS server would not cause me more problems
> than I have now.
> Server 2008 is RTM in March and it has IPv6 built into the GUI so
> I'll wait and see if their new improved DNS sorts it.
> Thanks to all for the suggestions and pointers
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