Update mailing-lists with latest mailing lists and SMTP sending accounts in ImprovMX

[jfly]

See mailing-lists. This needs to be updated with the latest data in ImprovMX.

This is worth scriptifying, because we'll have to do it again right before switching our MX records (in case anything changes in the mean time).

There are 2 parts to this:

• Import ImprovMX aliases #597: Import the mailing lists ("aliases" from ImprovMX. We can do this ourselves, just need a dump from ImprovMX.
  • To dump aliases from ImprovMX: curl -X GET https://api.improvmx.com/v3/domains/nixos.org/aliases -H "Authorization: Basic api:$API_KEY" > /tmp/improvemx.json
• Set up STMP sending accounts. We cannot do this ourselves, because it requires passwords. I've emailed the 2 accounts (as documented on https://github.com/NixOS/org/blob/main/doc/mail.md). I'm waiting to hear back from them:
  • [email protected]
  • [email protected]