What's new

This quarterly release introduces a new package repository, components in different packages to better support Docker and Kubernetes, an HTTP submission API for pre-formatted RFC822 messages and the new halontop program showing realtime process metrics. Please see the changelog below for a full list of changes, and the release blog for more information.

Important changes

• The deprecated GetMailFile() function has been removed.
• It's no longer valid to send message to IP addresses using the invalid "user@ip" notation.
• Removed signature_exclude option from integrated (VM) packages's ClamAV function since it cannot return multiple results, and disabled the most excluded signatures PhishingScanURLs.
• On MTA shutdown, all inbound connections are now closed gracefully (which takes longer time).
• The log files now uses standard TLS cipher names instead of OpenSSL's notation.
• The MTA process threads (visible in top) are renamed for better clarity
• Due to a bug in the rate function, all non-string data types for the namespace and entry parameters were previously implicitly converted, this is no longer supported

Changelog

This is a list of notable changes. You can find the full changelog here.

Added

• MTA
  • Templates for Docker and Kubernetes
  • APT/deb and RPM repositories with components in separate packages
  • HTTP submission API for pre-formatted RFC822 messages
  • New halontop program showing realtime process metrics
  • New reserved connection slots for specified remote IP addresses
  • Ability to use multiple spool paths
  • Export message using with QueueExportRequest API
  • Include queue policy insights in post-delivery $arguments["policy"] array
  • Added support for customization of the Received header (tls and for)
  • Support message retry with a jitter (distribution) in queue actions
  • Added lists, grouping of conditions, and custom properties to active queue policy and delivery settings
• Scripting language
  • Added additional_signatures option to signDKIM() for faster dual-signing
  • Added import support for multiple X.509 certificates (.crt) and RFC 822 messages (.eml)
    
  • Added glob import support
  • Added support for srv records in dns_query() function
  • Added zlib_compress() and uncompress functions
  • Added MIME.toFile() function returning a File resource 
  • Added MIME.setDate() function to easily overwrite/set a Date header
  • Added X509.extensions(), X509.verify() and X509::String() functions
  • Added queue_policy_delete function allowing more queue control automation
• Native plugins
  • Creating Halon script classes/objects
  • Throw Halon script exceptions
  • Executing Halon script callback functions
  • Encoding/decoding JSON directly to/from Halon script variables
  • Autoloading plugins without configuration
  • Support for more types such as X509, File objects
  • Added Halon_command_execute() function, supporting argv style of arguments
  • Added Halon_early_init() function, supporting early initialization
  • Added HalonMTA_hsl_value_array_length function

Integrated (VM) package

• Cyren anti-malware (Command AV) engine
• Updated Cyren to ctasd 5.4.1 and ctipd 4.4.1
• Updated Sophos to SAVI 3.2.07.383.3
• Updated to FreeBSD 12.2-RELEASE-p11 with quarterly packages