Keld J?rn Simonsen:
> 450 indicates a temporary dns error, and I have set
> unknown_address_reject_code = 550
unknown_address_reject_code is for permanent errors.
In your case, the system library getnameinfo() returns a
temporary error, therefore Postfix will reply with 450.
Since you also can't look up the name for my own server 168.100.189.2,
I suspect one or more of the following:
- Incorrect system permissions of / /etc /etc/resolv.conf
/etc/nsswitch.conf or the files and directories referenced by
/etc/nsswitch.conf.
Files must be world readable, and directories must have world
read-execute permission.
- Running Postfix chrooted without providing the necessary files
in the chroot jail.
Wietse
