Advertisement:

PowerMTA aka PMTA is considered one of the best commercial MTA (Message Transfer Agent), currently being used by some of the known ESPs (Email Service Providers) & enterprise businesses such as MailChimp, Microsoft, IBM, etc.

Need someone to install & configure PowerMTA for you? Contact us https://ipwarmup.com/powermta

Continuing the good & hard work by team behind PowerMTA, new v5.0r7 has been released on 2021-01-07. Let’s see what is changed since v5.0r4 release:

2021-01-07: released build 5.0r7

    - added support to configure click tracking and top/bottom open pixel insertions independently
      from each other when using engagement tracking with SparkPost Signals;

    - extended "smtp-pattern-list" to allow specifying the time interval after which a queue will
      return to normal mode after being set into backoff mode with the mode=backoff action;

    - extended "include" directive to support fetching configuration from external sources
      through HTTP or HTTPS;

    - added support for DKIM signing DSN emails issued by PowerMTA;

    - added "pmta show vmta-settings" command to view settings of a particular VirtualMTA;

    - added support for customizing key length of DH (Diffie-Hellman) parameters used during a
      TLS 1.1 or TLS 1.2 handshake;

    - added "max-memory-usage-percent" directive to configure the maximum memory consumption
      of the PowerMTA process beyond which it will stop accepting incoming email;

    - fixed a bug in cold VirtualMTA selection which reduced the amount of email rerouted to
      a cold virtual MTA when MX rollup patterns are also configured;

    - upgraded to OpenSSL 1.1.1i, to get the latest bug fixes;

    - other small improvements and fixes;

2020-10-27: released build 5.0r6

    - added support for SMTP MTA Strict Transport Security (MTA-STS) mechanism, described
      in RFC 8461, for enforcing secure delivery of email over encrypted connections
      to remote domains that support it;

    - added support for persistent connections for inbound HTTP connections when using
      Transmissions API to submit messages to PowerMTA;

    - greatly improved speed of reload operation when configuration file has large number
      of domain keys and virtual MTAs defined;

    - disallowed TLSv1.1 by default for incoming SMTP and HTTP connections to PowerMTA since
      it is now considered deprecated;

    - added support for HAProxy protocol version 2 for outbound traffic from PowerMTA;

    - fixed bugs in webhooks delivery when using compressed delivery over HTTPS and reduced
      frequency of retries when webhook connection attempts fail;

    - added List-Unsubscribe-Post to the default list of headers that are included in
      DKIM signature;

    - upgraded to OpenSSL 1.1.1g, to get the latest bug fixes;

    - other small improvements and fixes;

2020-07-13: released build 5.0r5

    - added support for volume based licensing option in PowerMTA; contact PowerMTA sales
      for more details about the new volume licensing option;

    - added support for writing accounting files in JSON format in addition to regular CSV
      format;

    - added support for webhooks to deliver accounting data in CSV or JSON format over
      HTTP(S) to a remote server; see User's Guide for more details on how to configure
      webhooks for accounting files;

    - added support for customizing with interpolation of select variables in "From" & "Subject"
      headers and content of the body of DSN reports issued by PowerMTA;

    - restructured the User's Guide to highlight the various SMTP & HTTP APIs available
      with PowerMTA, and specifically added more detailed documentation on HTTP APIs;

    - fixed crash caused when processing email addresses with malformed UTF-8 characters
      during inbound reception;

    - fixed source IP address for a connection incorrectly shown as "255.255.255.255"
      in some circumstances in "Errors" column on the web monitor's queue detail page;

    - fixed PMTA SNMP daemon failing to start in AgentX subagent mode;

    - we have added a retrospective entry to the 5.0r2 changelog reproduced here;
      fixed proxy connection information not being cleared before reusing a connection worker
      in another queue. Only affects PowerMTA 5.0r1 version when using proxy feature;
      we recommend upgrading to at least PowerMTA 5.0r2 version if you use proxy feature;

2020-04-16: released build 5.0r4

    - added ability to reroute messages from a queue to a Virtual MTA pool;

    - added support for engagement tracking events (opens/clicks) when using
      Sparkpost Signals;

    - added support for recording time of first attempt for a recipient in delivery(d),
      bounce(b) and transient(t) accounting records;

    - added support for use of domain macros with "<address-list>.domain", "relay-domain"
      and "domain-key" directives;

    - pinned main configuration file to the top of the list of files shown on the
      configuration edit page in the web monitor;

    - other small improvements;

Let us know, how much you like PowerMTA in comments below!


Advertisement:

Leave a comment

Your email address will not be published.


Advertisement:

Don't miss any updates that may help you get best email delivery!

You have successfully subscribed to the newsletter

There was an error while trying to send your request. Please try again.

IPwarmup.com Blog will use the information you provide on this form to be in touch with you and to provide updates and marketing.