Mailman-Developers November 2020

mailman-developers@python.org

5 participants
3 discussions

Mass subscriptions as a DoS attack
by Alessandro Vesely 29 Nov '20

29 Nov '20

Trolls can wreak havoc by subscribing to one or more high volume mailing lists on behalf of a target one. For example, someone could subscribe this list to the Linux kernel mailing list. Everybody would see the confirmation message, but by the time someone realizes the need to unsubscribe, the list will have been flooded, thereby realizing the DoS. Are there mechanisms to prevent that? Best Ale --

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Rewriting the Subject:
by Alessandro Vesely 25 Nov '20

25 Nov '20

Hi all, I've installed my reverting DKIM verifier. Today it failed on a specific message which I also received directly. The reason it failed is the Subject: field was rewritten like so: ORIGINAL: Subject: RE: [dmarc-ietf] A policy for direct mail flows only, was ARC questions REWRITTEN: Subject: Re: [dmarc-ietf] A policy for direct mail flows only, was ARC questions The message is tagged X-Mailman-Version: 2.1.29. Is it Mailman doing that change? I found some code which may seem to be doing something like that in CookHeaders.py: rematch = re.match( '(\s*(RE|AW|SV|VS)\s*(\[\d+\])?\s*:\s*)+', subject, re.I) if rematch: subject = subject[rematch.end():] recolon = 'Re:' It seems I have to save the subject if it matches that string, correct? Best Ale --

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Mailman Core 3.3.2 is now out
by Abhilash Raj 06 Nov '20

06 Nov '20

Hi Everyone, I am pleased to announce that with a week long delay from the planned date, GNU Mailman Core 3.3.2 is now finally out. This release includes both bug fixes and some new features. Some notable changes include: - Support for inviting users to join mailing lists. - New adddmembers, delmembers and syncmembers command to manage membership from CLI. - Addition of new REST API endpoints that return the count of held messages and subscription requests of much faster page loads in Postorius. - Addition of support for filtering in some API endpoints like Members and Subscription requests. - Support for address= option in email join command to subscribe an address other then sending address. - Addition of who email command to lookup memberships. - Expose emergency field for MailingList resource in REST API. - Several bug fixes to support new major version of libraries like dnspython, flufl.* etc. You can install it using: $ pip install --upgrade mailman The tarball for the release is available at PyPI: https://pypi.org/project/mailman/ Finally, many thanks to all the contributors who have helped make this release a success! -- Abhilash Raj (maxking) on behalf of Mailman Core team

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Mailman-Developers November 2020