DNS blacklist

[MikeDawg]

sam wrote:
> Hi,
>
> Hi, I tried to send an email to the following address (example only),
> but it bounced back with the following error msg in Postfix mail server.
> The postfix mail log said that,
>
> to=<anbc at roosf.com.au>, relay=10.1.131.4[10.1.131.4], delay=1,
> status=bounced (host 10.1.131.4[10.1.131.4] said: 550 DNS Blacklist (in
> reply to RCPT TO command))
>
> What is this means?
>
> Thanks
> S

Sorry, my mind isn't in the right place today, what I should have said,
is that your SMTP server is probably misconfigured and doesn't realize
that you're using the 10.0.0.0/8 network.