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Hi there. We use in our postfix servers several programs to prevent spam
(amavisd-new + spamassassin, postgrey, and policyd-weight). We like very
much policyd-weight because it bases its blocking decissions on a score
calculated by the number of blacklists a server is in. We are, however,
puzzled by the fact that we are blocking all incoming email from
terra.es, a division of telefonica, the largest ISP in Spain. Before we
contact terra's postmaster, we are trying to figure out where the
problem is. Although this is a postfix list (and not policyd-weight's),
I humbly ask you all email gurus for help since this is more related to
rbl and dns stuff than policyd-weight malfunctioning. Here's the log:

Jun 25 20:36:24 isp0 postfix/policyd-weight[7542]: weighted check:
NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 IN_UCEPROTECT1=3.25
NOT_IN_BL_NJABL=-1.5 IN_IX_MANITU=4.35 CL_IP_EQ_HELO_IP=-2 (check from:
.terra. - helo: .impaqm2.telefonica. - helo-domain: .telefonica.)
FROM/MX_MATCHES_NOT_HELO(DOMAIN)=2.9 CLIENT_NOT_MX/A_FROM_DOMAIN=9.1;
<client=213.4.149.62> <helo=impaqm2.telefonica.net>
<from=anyterrau...@terra.es> <to=sa...@ourdomain.ltd>; rate: 13.1
Jun 25 20:36:24 isp0 postfix/policyd-weight[7542]: decided action=550
Mail appeared to be SPAM or forged. Ask your Mail/DNS-Administrator to
correct HELO and DNS MX settings or to get removed from DNSBLs; please
relay via your ISP (terra.es); <client=213.4.149.62>
<helo=impaqm2.telefonica.net> <from=soraya....@terra.es>
<to=sa...@ourdomain.ltd>; delay: 1s
Jun 25 20:36:24 isp0 postfix/smtpd[11556]: NOQUEUE: reject: RCPT from
impaqm2.telefonica.net[213.4.149.62]: 550 5.7.1 <sa...@ourdomain.ltd>:
Recipient address rejected: Mail appeared to be SPAM or forged. Ask your
Mail/DNS-Administrator to correct HELO and DNS MX settings or to get
removed from DNSBLs; please relay via your ISP (terra.es);
from=<anyterrau...@terra.es> to=<sa...@ourdomain.ltd> proto=ESMTP
helo=<IMPaqm2.telefonica.net>

Please know that although terra.es show listed twice in rbl lists, we do
not block them for that particular reason (we block when anyone is
listed 3 times in rbl lists). We are blocking them because of this line:

FROM/MX_MATCHES_NOT_HELO(DOMAIN)=2.9 CLIENT_NOT_MX/A_FROM_DOMAIN=9.1

we have checked their dns entries and seem normal (I'm no dns expert though)

Any help is much appreciated.

Regards,

Ignacio
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