This has happened before was reported to BSA IT ( Scoutbook emails fail SPF/DKIM ), but I’m not sure if it broke again or just never got fixed.
Currently event reminders from Scoutbook are sent from @scouting.org and the DKIM is saying they should be from scoutbook.scouting.org . So this is making DKIM checks fail.
The DKIM record needs to be fixed.
SPF also could be tweaked, but from I saw, it passed. So no change required there.
Could someone put in another ticket for this?