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DKIM and DMARC can be CNAMES, many services already use this, at Fastmail for example for DKIM you setup CNAMES, and we manage DKIM keys for you. SPF needs to b
by marcbradshaw 5y ago
DKIM and DMARC can be CNAMES, many services already use this, at Fastmail for example for DKIM you setup CNAMES, and we manage DKIM keys for you.
SPF needs to be on your (root/organizational) domain, and you don't want (can't have) a CNAME there.