Hey there, we're getting a lot of clients complaining that they're not getting email from certain senders, looking through the logs we're seeing: Oct 24 20:51:27 mars2 postfix/smtpd: NOQUEUE: filter: RCPT from unknown[192.168.1.49]: <[email protected]>: Sender address triggers FILTER amavis:[127.0.0.1]:10024; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<Barracuda.xxxxxxxxx.com> Looking at his email headers the senders server is misconfigured as having 127.0.0.1 address: Received: from localhost (mail.glacier-digital.net [127.0.0.1]) We have a mail filter [192.168.1.49] prior to our ISPConfig server so we really don't need it policing incoming mail. Is there a way to disable the amavis filters for a single client or the server as a whole? Also: Our mail filter barracuda.xxxxx.com is showing up as 192.168.1.49 in that log. Is this the problem? It can't resolve it's internal IP to a hostname because the server is using 188.8.131.52 for resolution. How would this normally be configured?