+ // https://kb.mailbox.org/en/private/custom-domains/spf-dkim-and-dmarc-how-to-improve-spam-reputation-and-avoid-bounces
+ CNAME("MBO0001._domainkey", "MBO0001._domainkey.mailbox.org."),
+ CNAME("MBO0002._domainkey", "MBO0002._domainkey.mailbox.org."),
+ CNAME("MBO0003._domainkey", "MBO0003._domainkey.mailbox.org."),
+ CNAME("MBO0004._domainkey", "MBO0004._domainkey.mailbox.org."),
+