Mark Felder answers Chris Watson:
Any thoughts? Ideas? Ways to debug wtf is going on to invalidate the pgp
signature?
Exactly which version of aox are you running? PGP has been broken in aox
storage for a long time, but was fixed and has not yet been in a
"release".
https://github.com/aox/aox/commit/4e73c54509612104f0afb9d968b5e851998d14e3
At a guess, that commit will permit PGP signatures to be verified, but will
break some IMAP fetches. (Trojita is unable to read Chris' message.) I
expect Axel will push a fix for that soonish, then Abhijit and I roll a new
tarball.
Arnt