# DKIM
DKIM_SELECTOR = 20161117
# Get the domain from the outgoing mail.
DKIM_DOMAIN = ${lc:${domain:$h_from:}}
# If key exists then use it, if not don't.
DKIM_PRIVATE_KEY=${if exists{/etc/exim4/dkim/${dkim_domain}.private.pem} {/etc/exim4/dkim/${dkim_domain}.private.pem}}