previously any gov.uk address was allowed, this is now only fco or fcdo
fco.gov.uk, fcdo.gov.uk and email domains can be configured by providing a comma separated list to ALLOWED_EMAIL_DOMAINS. eg ALLOWED_EMAIL_DOMAINS=kainos.com,cautionyourblast.com
changes made
ALLOWED_EMAIL_DOMAINS
. egALLOWED_EMAIL_DOMAINS=kainos.com,cautionyourblast.com