From: Wietse Venema (wietseporcupine.org)
Date: Tue Jan 15 2008 - 18:21:46 CST

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James D. Parra:
[ Charset ISO-8859-1 unsupported, converting... ]
> Hello,
>
> Noticed a suggestion to use rbl check in an earlier post to the list today,
> however after adding bl.spamcop.net to main.cf mail from a certain domain
> started to a 451 error;
>
> >From main.cf;
>
> <Snip>
> smtpd_client_restrictions =
> permit_mynetworks
> reject_rbl_client dnsbl.sorbs.net
> reject_rbl_client zen.spamhaus.org
> reject_rbl_client bl.spamcop.net
> permit
> <snip>
>
> >From /var/log/mail
>
> Jan 15 15:42:53 postmaster postfix/smtpd[29594]: NOQUEUE: reject: RCPT from
> s412.sureserver.com[216.35.197.113]: 451 Server configuration error;
> from=<jamespsomedomain.com> to=<jamespourdomain.com> proto=ESMTP
> helo=<s412.sureserver.com>
>
> After removing bl.spamcop.net mail from the domain started to come through
> again. That domain doesn't send spam so it shouldn't be listed. Any ideas?

http://www.postfix.org/DEBUG_README.html#logging

Run the "egrep" example.

        Wietse

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