I have a user getting rejects from several valid senders based on ix.dnsbl.manitu.net blacklist, like:
NOQUEUE: reject: RCPT from smtpout6.poczta.onet.pl[213.180.147.166]: 554 5.7.1 Service unavailable; Client host [213.180.147.166] blocked using ix.dnsbl.manitu.net; Spam sent to the mailhost relay.heise.de was detected by NiX Spam at Tue, 16 Mar 2010 12:36:26 +0100, see http://www.dnsbl.manitu.net/lookup.php?value=213.180.147.166; from=<x...@poczta.onet.pl> to=<y...@domain.tld> proto=ESMTP helo=<smtpout6.poczta.onet.pl> all these senders were from '@poczta.onet.pl' and, smtpout*.poczta.onet.pl hosts what's the best way to get her emails through ? add her email 'y...@domain.tld 'to /etc/postfix/recipient_no_checks ? smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, check_client_access hash:/etc/postfix/pop-before-smtp, reject_unauth_destination, check_recipient_access hash:/etc/postfix/recipient_no_checks, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_invalid_hostname, reject_non_fqdn_hostname, reject_unknown_sender_domain, reject_unknown_reverse_client_hostname reject_unlisted_recipient, check_sender_access hash:/etc/postfix/freemail_access, check_recipient_access pcre:/etc/postfix/recipient_checks.pcre, check_helo_access hash:/etc/postfix/helo_checks, check_sender_access hash:/etc/postfix/sender_checks, check_client_access hash:/etc/postfix/client_checks, check_client_access pcre:/etc/postfix/client_checks.pcre, reject_rbl_client zen.spamhaus.org, reject_rbl_client combined.njabl.org, reject_rbl_client bl.spamcop.net, reject_rhsbl_sender dsn.rfc-ignorant.org, reject_rbl_client ix.dnsbl.manitu.net, reject_rbl_client psbl.surriel.com, check_policy_service inet:127.0.0.1:10031, permit -- Voytek