Hello! I’m running Postfix 2.11.0,1 on FreeBSD 10.0-RELEASE-p1 inside of a jail. The jail is bound to an alias of the hosts loopback interface lo0.
I stumbled onto this error message while sifting through /var/log/maillog: Apr 13 03:01:06 mail postfix/smtp[22641]: 4F6CD41BB: to=<root@db>, relay=none, delay=0.17, delays=0.16/0/0/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=db type=A: Host not found) I have several jails, all of them are affected by this issue. Mail originating from the jail host, such as the output of the periodic scripts is delivered without problem. Also, I am able to receive and send mails from and off to other mailservers. First thing I checked was the name resolution inside of the jails. All jails, including the mail jail itself can properly resolve external domains. It is not possible to resolve any of the hostnames of the jails though. I'd very much appreciate your help, Sebastian
