Comment 14 for bug 1575940

I think that I cloud could have the same problem, after I opened: https://bugs.launchpad.net/landscape/+bug/1591375
I looked at syslog in landscape container and found this:

Jun 10 21:11:35 juju-machine-0-lxc-1 postfix/smtp[11872]: 915161E176B: to=<email address hidden>, relay=none, delay=0.03, delays=0.02/0/0/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=juju-machine-0-lxc-1.maas type=AAAA: Host not found)
Jun 10 21:11:35 juju-machine-0-lxc-1 postfix/bounce[11876]: 846BD1E1768: sender non-delivery notification: 970391E1766
Jun 10 21:11:35 juju-machine-0-lxc-1 postfix/qmgr[8918]: 970391E1766: from=<>, size=2639, nrcpt=1 (queue active)
Jun 10 21:11:35 juju-machine-0-lxc-1 postfix/qmgr[8918]: 846BD1E1768: removed
Jun 10 21:11:35 juju-machine-0-lxc-1 postfix/qmgr[8918]: 915161E176B: removed
Jun 10 21:11:35 juju-machine-0-lxc-1 postfix/smtp[11868]: 970391E1766: to=<email address hidden>, relay=none, delay=0.04, delays=0.04/0/0/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=juju-machine-0-lxc-1.maas type=AAAA: Host not found)
Jun 10 21:11:35 juju-machine-0-lxc-1 postfix/qmgr[8918]: 970391E1766: removed
Jun 10 21:13:19 juju-machine-0-lxc-1 postfix/pickup[8917]: EFDE91E1766: uid=1000 from=<ubuntu>
Jun 10 21:13:19 juju-machine-0-lxc-1 postfix/cleanup[12027]: EFDE91E1766: message-id=<email address hidden>
Jun 10 21:13:20 juju-machine-0-lxc-1 postfix/qmgr[8918]: EFDE91E1766: from=<email address hidden>, size=508, nrcpt=1 (queue active)
Jun 10 21:13:20 juju-machine-0-lxc-1 postfix/smtp[12028]: EFDE91E1766: to=<email address hidden>, orig_to=<root>, relay=none, delay=0.05, delays=0.04/0.01/0/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=juju-machine-0-lxc-1.maas type=AAAA: Host not found)