Bug: Downloading mail archives from Mailman3 often times out

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#2,847 opened on Dec 11, 2025 2 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 35/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Stale
Tech stack: python
Domain: backend

Research direction

Start by reproducing the July 2001 download from https://mail.python.org/archives/list/python-list@python.org/ and compare complete, monthly, and smaller archive requests. Trace the archive download path and its timeout or generation behavior; done means the requested archive downloads successfully without timing out.

Written by the indexing model from the issue text.

Description

bug

Describe the bug

I've been trying to download the mail archive for the python-list (comp.lang.python mirror) via https://mail.python.org/archives/list/python-list@python.org/ for history research purposes.

The complete download directly fails with a message that the request will time out.
The monthly download times out for a lot of months.
Using the URL parameters, I then tried half month downloads and even weekly downloads, but still get time outs.

In essence there appears to be no usable way to download the complete archive using this Mailman3 interface.

Using the old Mailman2 interface from https://mail.python.org/pipermail/python-list/, the downloads succeed without any problems - essentially those are static files, not files which the server needs to generate upon request.

Is there anything which could be done about this (e.g. extending timeouts or increasing VM sizing parameters) ?

Thanks.

To Reproduce

Go to https://mail.python.org/archives/list/python-list@python.org/
Try to download e.g. July 2001

Expected behavior

A working download without timeouts.

URL to the issue

https://mail.python.org/archives/list/python-list@python.org/

Screenshots

"![SCREENSHOT_DESCRIPTION](SCREENSHOT_LINK.png)"

Browsers

Chrome

Operating System

Windows

Browser Version

No response

Relevant log output

Additional context