Email Authentication

zcu.cz

SPF

pass

Declares which servers may send mail for this domain.

v=spf1 mx ip4:147.228.0.0/16 ip6:2001:718:1801::/48 -all

none

Cryptographic signature on outbound mail (selector: none).

No record published.

warning

Tells receivers what to do with mail that fails SPF/DKIM. Policy: none.

v=DMARC1; p=none; rua=mailto:dmarc-rua@zcu.cz

10 fred.zcu.cz