El jue, 3 dic 2020 a las 18:18, Wietse Venema (<wie...@porcupine.org>) escribió:
> 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 > OK Wietse, somewhat to take in account, such domain name has not a record AAAA for its MX, but only has a record A. -- -- Sergio Belkin LPIC-2 Certified - http://www.lpi.org
