Am 20.07.2011 05:15, schrieb Michael Orlitzky: > And a trickier one: > > * smtp_dns_resolver_options = res_defnames, in postfix <= 2.8
That would be "< 2.8". > Append the current domain name to single-component names (those > that do not contain a "." character). This can produce incorrect > results, and is the hard-coded behavior prior to Postfix 2.8. Mind you there was a massive related bug in GNU glibc and eglibc that caused name lookups to fail without glibc ever having sent a DNS query when res_defnames was cleared for one-component names. This was reported against the upstream and at least Ubuntu and openSUSE, and it is fixed in the upstream glibc repository, but I'm not aware which Linux distros have actually gone for a stable release update. See https://bugs.launchpad.net/ubuntu/natty/+source/postfix/+bug/777855 it also has links to the upstream and SUSE reports and the upstream patch to (e)glibc.
