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The following is our preferred method for configuring Zimbra to work with Abusix Guardian Mail: Use the zmprov command as the zimbra user.
  1. Switch to the zimbra user:
    su - zimbra
  2. Add the DNSBL (reject lists) to the global configuration:
    zmprov mcf +zimbraMtaRestriction "reject_rbl_client <APIKEY>.combined.mail.abusix.zone"
    (Replace <APIKEY> with “Your API key” from your account in app.abusix.com.)
  3. Next create the file opt/zimbra/conf/dnsbl-reply-map if it doesn’t already exist add the following:
    <APIKEY>.combined.mail.abusix.zone mail.abusix.zone Replace <APIKEY> with “Your API key” from your account in app.abusix.com. This is important to prevent your API key from leaking.
  4. Run postmap /opt/zimbra/conf/dnsbl-reply-map
  5. Add the following line (as root) to /opt/zimbra/common/conf/main.cf
    rbl_reply_maps = lmdb:/opt/zimbra/conf/dnsbl-reply-map
  6. Refresh the MTA configuration:
    zmmtactl restart

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Reporting spam back to us

You can also configuring Zimbra to send us spam reports for false-negatives by creating a Data Channel by following the instructions here: https://docs.abusix.com/docs/abuse-reporting/global-reporting/abusix-global-feedback-loop

Once complete, this will provide you with a <data-channel-id>@smtp-forward.abusix.com address which you configure Zimbra to send users spam reports to us by completing the following steps:
  1. Switch to the zimbra user:
    su - zimbra
  2. Run zmprov mcf +zimbraSpamIsSpamAccount <data-channel-id>@smtp-forward.abusix.com
    (Replace <data-channel-id> with the actual address we provided to you)
  3. Run zmcontrol restart