heisec.de

Registration

Updated

2021-10-28

Name servers

• ns.heise.de.
• robotns2.second-ns.de.

DNS records live

NS

• ns.heise.de
• robotns2.second-ns.de

MX

• 10 mx01.hornetsecurity.com
• 20 mx02.hornetsecurity.com
• 30 mx03.hornetsecurity.com
• 40 mx04.hornetsecurity.com

Verified for

• Microsoft 365

Email authentication strong

SPF

v=spf1 ip4:193.99.144.0/24 ip4:193.99.145.0/24 ip6:2a02:2e0:3fe:1001::/64 ip6:2a00:e68:14:800::/64 include:spf.hornetsecurity.com -all

strict (-all)

DMARC

v=DMARC1; p=quarantine; sp=reject; rua=mailto:dmarc.report@heisec.de

policy: quarantine · sp=reject

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗

Linked from (1)

• al-c.de×1