https://kb.mailbox.org/en/business
https://kb.mailbox.org/en/private/e-mail-article/using-e-mail-addresses-of-your-domain
DNS-Records:
MX Prio 10 mxext1.mailbox.org MX Prio 10 mxext2.mailbox.org MX Prio 20 mxext3.mailbox.org TXT v=spf1 include:mailbox.org ~all
DKIM ($DOMAIN ersetzen):
MBO0001._domainkey.$DOMAIN CNAME MBO0001._domainkey.mailbox.org MBO0002._domainkey.$DOMAIN CNAME MBO0002._domainkey.mailbox.org MBO0003._domainkey.$DOMAIN CNAME MBO0003._domainkey.mailbox.org MBO0004._domainkey.$DOMAIN CNAME MBO0004._domainkey.mailbox.org
autoconfig CNAME mailbox.org _autodiscover._tcp SRV 0 0 443 mailbox.org
Gewichtung: 0 Port: 443 Server: mailbox.org