Warden Anti-spam and Virus Protection 4.06-1

To install an extension from a file via the Plesk interface:

1. Add the following lines to the panel.ini file:
   [ext-catalog]
   extensionUpload = true
   
   
2. Click Extensions and go to My Extensions.
3. Click Upload Extension. Select the file containing the packaged extension you want to install, and click OK.

With the Warden Antispam and Virus protection, you get the best of both worlds. Open source standards for content filtering from Amavis®, SpamAssassin®, and ClamAV® combined with deep integration with the Plesk control panel.

With support for over 25 SpamAssassin plugins, inbound/outbound scanning, database logging, custom rule builder, spam and virus quarantine, real-time spam learning, rich reporting, and multi-role access, Warden provides you with the most robust, extendable anti-spam and anti-virus solution for Postfix anywhere.
Important

• This is a paid extension that is designed for power users and service providers. Some system administration experience is recommended.
• On Centos/RHEL/Cloudlinux/AlmaLinux the EPEL and Danami repositories will be enabled and SpamAssassin will up updated to the very latest SpamAssassin.
• Amavis, ClamAV, Razor2, and Pyzor will be installed and removed on un-install (The ClamAV packages will be removed if the Sentinel Anti-malware Plesk extension is not also installed).
• Incompatible components will be disabled on install then re-enabled on un-install (SpamAssassin service, drweb).
• Legacy Plesk spam filter settings will no longer be used but administrators can optionally migrate old mailbox settings using the Warden policy migrator.

Features

Amavis Content Filter
Amavis is a high-performance interface between Postfix, SpamAssassin, and ClamAV. Amavis has been the gold standard used by large email providers for over a decade.

• Supports the amavisd-milter which allows you to reject spam and viruses at the SMTP level.
• Block spam, viruses, banned attachments, and even messages with non-compliant email headers.
• Call one or more anti-virus scanners. Amavis supports over 40 different anti-virus scanners.
• Does not let mail pass unchecked when there are server issues or when mail is too big. Mail will stay in the Postfix queue.
• Check MIME types, file names and content types of decoded mail parts against a list of banned names and content types.
• Check the mail header for invalid characters and other common violations of rfc2822.
• Unpack multiple formats: MIME, uuencode, xxencode, BinHex, compress, gzip, bzip, bzip2, zip, 7-zip, freeze, lzop, tar, cpio, rpm, deb, rar, arc, arj, zoo, lha, tnef, ole, cab.
• SpamAssassin check is called only once per message regardless of the number of recipients.
• Standards compliant and adheres tightly to multiple RFC specifications.

SpamAssassin Anti-spam
Warden super charges SpamAssassin by providing deep integration with Plesk and enabling all of the most effective SpamAssassin plugins.

• Antivirus - Simple antivirus tests to check if an email contains an executable attachment.
• ASN - Add metadata to the Bayesian filtering process, allowing the Bayesian filters to learn information based on the ASN of the connecting IP address.
• AWL - Track scores from messages previously received and adjusts the message score by boosting or penalizing messages from senders who send ham or spam.
• DCC - DCC is a system of servers counting checksums of millions of mail messages to determine of a message is bulk email or not.
• DKIM - Perform DKIM lookups as well as historical DomainKeys lookups.
• DMARC - Check if an email respects its domain DMARC policy.
• FreeMail - Check the headers for indication that a senders domain is that of a site offering free email services.
• FromNameSpoof - Perform various tests to detect spoof attempts using the From: header name section.
• HashBL - Search for email addresses in the message header and body and check them against various blacklists.
• OLEVBMacro - Use several methods to search attached documents for evidence of an OLE Macro or VB code.
• PDFInfo - Use several methods to detect a PDF files ham and spam traits.
• Phishing - Check URIs against Openphish and PhishTank phishing feeds.
• Pyzor - A collaborative, networked system to detect and block spam using identifying digests of messages.
• Razor2 - A distributed, collaborative, spam detection and filtering network based on user submissions of spam.
• RelayCountry - Add metadata to the Bayesian filtering process, allowing the Bayesian filters to learn information based on countries.
• ResourceLimits - Limit the memory / CPU usage of child spamd processes.
• Rule2XSBody - Compile SpamAssassin ruleset into native code for optimum performance.
• SH - The Spamhaus data query service is a set of DNSBLs with real-time updates operated by Spamhaus Technology.
• Shortcircuit - Stop evaluation early if high-accuracy rules fire in order to reduce CPU load.
• SPF - Check SPF records published by the domain owners in DNS to fight email address forgery and make it easier to identify spam.
• TextCat - Score messages based on which language the email was written in.
• TxRep - Normalize scores with sender reputation records.
• URLDNSBL - Look up URLs in a message against DNS blocklists.
• URILocalBL - Blacklist URIs using local country and CIDR information.
• VBounce - Aid in rescuing genuine bounces.
• WelcomeListSubject - Whitelist or blacklist by Subject: header.