Sergio Belkin:
> > What comes to mind:
> >
> > 1) You ran the command as root, and the Postfix SMTP client does
> > not run as root. Name resution fails when the necessary files are
> > not accessible.
> >
> > 2) You ran the command outside the Postfix chroot jail, and the
> > Postfix SMTP client runs inside the Postfix chroot jail. Name
> > resolution fails inside the chroot jail when files are missing,
> > have wrong permissions, or have wrong contents.
> >
> > 3) Some "security" configuration is breaking Postfix. For exammple
> > SeLiux or AppArmor.
> >
>
> I have SELinux disables, and have no AppArmor
>
> >
> > 4) Some other permisssion or configuration problem.
>
> It's weird because it only happens with a few domains...
It would be perfectly consistent with cases 1, 2, or 4 above. You
can start with a network sniffer and verify that Postfix sends its
the right DNS queries to the 'right' server.
Wietse
