Hi,
I have installed a Courier Mailserver on FreeBSD 5.1. It`s ok, but I have a problems with DNS. :o( All emails are blocked and in the mailog is a message .. for example:
courieresmtpd: error,relay=::ffff:62.168.57.203,from=<[EMAIL PROTECTED]>: 417 DNS lookup failure: post.cz. Try again later.
Verify that all DNS servers listed in /etc/resolv.conf are properly functioning.
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