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So I've managed to setup bind9 and a mail server, but it seems there is something wrong. I don't quite under stand this error:

The configuration of your mail servers and your DNS are not ok! The report of the test is: -> -> ->
Spam recognition software and RFC821 4.3 (also RFC2821 4.3.1) state that the hostname given in the SMTP greeting MUST have an A record pointing back to the same server.

Can anyone explain this to me in a bit more detail, and maybe point me in a direction to solve this?

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please quote the real domain name. – Alnitak May 13 '10 at 11:36
edited original post – ferdi May 13 '10 at 12:04
up vote 1 down vote accepted

The system is complaining because the IP address of your mail server has a PTR record which refers to a hostname ( which does not itself exist.

Simply add:

lisa IN A

to your zone file and all should be well.

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