Documentation: Start administrator handbook

Let's spread the work of maintaining various of our services, but to
achieve that, we need to document what needs to be done.

Change-Id: I87021ee62d18fa464f70351ea8bad732889d55f1
Signed-off-by: Patrick Georgi <patrick@coreboot.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79901
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

Documentation/infrastructure/admin.md

@@ -0,0 +1,52 @@
+# Operating our services
+
+## Mailing list moderation
+
+Our [mailing lists] experience the same barrage of spam mails than any
+other email address. We do have a spam filter in front of it, and
+since the lists require registration, spam ends up in the moderation
+queue. But not only spam ends up there, sometimes users send inquiries
+without registering first. It's a custom of the project to let these
+through, so that such emails can be discussed. This requires manual
+intervention.
+
+This section describes the tasks related to mailing list management.
+
+### Registration
+
+To participate in mailing list moderation, you need to become a list
+moderator or owner. This is up for the existing owners to handle and
+if you want to contribute in that area, it might be best to bring it
+up at the leadership meeting.
+
+After gaining leadership approval, list admins can add you to the
+appropriate group in the [mailing list backend] by selecting the list,
+then User / group-name, and add your email address there.
+
+### Regular tasks
+
+Most of our lists are auto-subscribing, so users can register
+themselves and finish the process by responding to the double-opt-in
+email. Some lists are manually managed though. The [mailing list
+backend] shows the number of open subscription requests for these
+lists on the mailing list's main page.
+
+It also provides a list of held messages, where they can be accepted,
+rejected or dropped. Spam should be dropped, that's clear. Emails with
+huge attachments (e.g. screenshots) should be rejected, which gives
+you an opportunity to explain the reason (in case of large
+attachments, something like "Please re-send without attachments, offer
+the files through some other mechanism please: Our emails are
+distributed to hundreds of readers, and sending the files to everybody
+is inconsiderate of traffic and storage constraints.")
+
+Legit emails (often simple requests of the form "is this or that
+supported") can be accepted, which means they'll be sent out.
+
+If you notice recurring spam sources (e.g. marketers) you can put them
+on the [global ban list] to filter them out across all lists. It takes
+entries in regular expression format.
+
+[mailing lists]: https://mail.coreboot.org/hyperkitty/
+[mailing list backend]: https://mail.coreboot.org/postorius/
+[global ban list]: https://mail.coreboot.org/postorius/bans/

Documentation/infrastructure/index.md

@@ -5,7 +5,7 @@ This section contains documentation about our infrastructure
 ## Services
 
 * [Project services](services.md)
-
+* [Administrator's handbook](admin.md)
 
 ## Jenkins builders and builds
 * [Setting up Jenkins build machines](builders.md)