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Thread: Help to adjust Spam DNS Checking

  1. #1
    eniomarconcini is offline Intermediate Member
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    Default Help to adjust Spam DNS Checking

    Hello all,

    I have a Zimbra setup, and I have some dnsbl in Global Config->MTA->DNS Checking

    with postconf I see this

    smtpd_recipient_restrictions = reject_non_fqdn_recipient, permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination, reject_unlisted_recipient, reject_invalid_hostname, reject_non_fqdn_hostname, reject_non_fqdn_sender, reject_unknown_client, reject_unknown_hostname, reject_unknown_sender_domain, reject_rbl_client bl.spamcop.net reject_rbl_client dnsbl.njabl.org reject_rbl_client cbl.abuseat.org reject_rbl_client zen.spamhaus.org reject_rbl_client b.barracudacentral.org reject_rbl_client safe.dnsbl.sorbs.net=127.0.0.2 reject_rbl_client safe.dnsbl.sorbs.net=127.0.0.3 reject_rbl_client safe.dnsbl.sorbs.net=127.0.0.4 reject_rbl_client safe.dnsbl.sorbs.net=127.0.0.5 reject_rbl_client safe.dnsbl.sorbs.net=127.0.0.7 reject_rbl_client safe.dnsbl.sorbs.net=127.0.0.8 reject_rbl_client safe.dnsbl.sorbs.net=127.0.0.9 reject_rbl_client safe.dnsbl.sorbs.net=127.0.0.10 reject_rbl_client safe.dnsbl.sorbs.net=127.0.0.11 reject_rbl_client safe.dnsbl.sorbs.net=127.0.0.12, permit

    but I have some problems when a hotmail user, sometimes a yahoo user or another webmail, and specially, some gov domains are blocked by system, and sender is noticed by the blocking with a message.

    How can I add mail addresses and/or domains to not be checked by this DNS checking?

  2. #2
    j2b
    j2b is offline Special Member
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    Default

    I'd be very careful with allowing any mails without any spam/virus check from yahoo, gmail and other public services, as such addresses are spoofed frequently, leading to full inbox with spam.

    Although, I can not answer your question on particular disablement of DNS checking for domains (leaving other checks intact), but probably this post can make some clearance on manual configurations: amavisWhiteListSender equivalent for domains? There are several more on item "whitelisting", etc.

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