@jfernandez I require you to do a test. Can you put into whitelist of Email page the domain of the email addresses? (Only what there is after @).
Obviously comment your personalization in /etc/unbound/local.d/myMDaemon.conf and restart unbound service.
I think that it can works with this settings and it go into backup-config.
I’m dealing with a wave of spam and messages with virus right now (rejected messages have doubled ). As soon as this wave ends, I promise to do it, sorry for not been more cooperative.