@silverpill I have done a little patch to do that: https://git.sr.ht/~cloutier/bird.makeup/commit/d50e4fa7672c4a0887d25ed00995b80948c491f8
The outbox does resolve to an empty collection though, just in case.
I have deployed this on kilogram.makeup, and if we find no federation problems introduced by this change, I will deploy it to bird.makeup too this weekend.
Can you check if there are other problems with federating dotmakeup <> @mitra ?