DKIM sigs [was Moderators Wanted / Notice]

Looks like all posts since Sunday fail their DKIM check. E.g. in my copy of the post on Moderators Wanted, I see

Authentication-Results: tilde.club; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=tilde.club header.i=@tilde.club header.a=rsa-sha256 header.s=mail header.b=GBCFGLR1

Doesn't matter for recipients @tilde.club, probably. But posts going outside are more likely to go to spam, assuming they fail there too? Anyone on an outside address seeing DKIM failures? (You'll need to use 'view headers' or some such on your mail client.)