Email Authentication

canonical.com

SPF

pass

Declares which servers may send mail for this domain.

v=spf1 include:_spf.canonical.com -all

none

Cryptographic signature on outbound mail (selector: none).

No record published.

pass

Tells receivers what to do with mail that fails SPF/DKIM. Policy: reject.

v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-rua@admin.canonical.com

10 mx.canonical.com