As one of the capi-sig list owners, I got many emails like:
"xxxx xxx@xxx's subscription has been disabled on firstname.lastname@example.org due to their bounce score exceeding the mailing list's bounce_score_threshold."
I guess that many people subscribed long time ago when the list was still run by Mailman 2 and Mailman 2 didn't have this feature. The list migrated to Mailman 3 something like 1 year ago. I guess that Mailman 3 started to disable many subscriptions because it has stricter default policy on bouncing.
Anyway, if you don't get new emails (like this one), check your subscription at:
Night gathers, and now my watch begins. It shall not end until my death.