tl;dr - Mozilla is overhauling its mailing list infrastructure and moving
away from legacy custom-patched mailman software. This list will be
decommissioned in the coming days; the SpiderMonkey team has decided to use
Discourse going forward: https://discourse.mozilla.org/c/spidermonkey
I'm going to shamelessly copy/paste the message Ted sent to
dev.tech.js-engine a while ago, because it also applies to this list:
Over the next few months, this mozilla.dev.tech.js-engine mailing list (and
its sibling mozilla.dev.tech.js-engine.internals) are being phased out. We
still want to hear your questions and the development team has agreed to
migrate to the Mozilla Discourse instance instead.
Discourse is a web-based forum that can still be accessed directly by email
if that is your preference. Please continue to ask your questions there. I
expect this should bring in more people from the current team to help with
answers and advice as well.
I will also take this opportunity to point out that the project now
maintains a website at https://spidermonkey.dev/
with the goal of keeping
links to relevant and current information there.
The development team has a public Matrix chat channel for real-time chat
for those who prefer it.
This current mailing list is actually a Usenet/NNTP group fused to email
via GNU Mailman and also to Google Groups. The setup is quickly showing its
age and due in for a modernization.
SpiderMonkey will turn 25 this year and the team is excited for what is in
store, so come join us on Discourse or Matrix!