Topic: User web filter syntax for Roundcube (managesieve) to block spam
Please let me know the syntax for the user's web interface for filtering Roundcube (managesieve) email with the following headers ...
Return-Path: MAILER-DAEMON
Delivered-To: recipient@example.com
X-FDA: 80506712244.56.6408422
Received: from senderserver.com (unknown [11.111.111.111])
by recipientserver.com with ESMTP id 1F8DD10EC8E3E
for <recipient@example.com>; Sat, 21 Feb 2023 18:53:22 +0000 (UTC)
I've tried the following to no avail ...
Filter with AND logic for the following three rules ...
return-path: contains mailer-daemon
received: contains unknown
from: not contains recipientserver.com
With thanks,
Jeff
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