Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
herzstiftung.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 17:18:03 UTC · ↺ Refresh
MX Hostnames
- herzstiftung-de.mail.protection.outlook.com
MX Priorities
- herzstiftung-de.mail.protection.outlook.com: 1
A / AAAA Records
- 172.66.174.166 (no PTR)
- 104.20.33.16 (no PTR)
- 2606:4700:10::6814:2110
- 2606:4700:10::ac42:aea6
Mail Server IPs
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 52.101.73.16 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
SOA Record
Raw SOA
chip.ns.cloudflare.com dns.cloudflare.com 2398105496 10000 2400 604800 1800
Primary NS (mname)
chip.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398105496
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
venus.ns.cloudflare.com
chip.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 a mx a:out.herzstiftung.de ip4:80.237.138.0/24 ip4:80.237.132.0/24 ip4:80.237.133.0/24 ip4:87.230.47.0/24 ip4:212.227.191.245 ip4:212.227.17.12 ip6:2a01:488:42::/48 include:spf.protection.outlook.com include:spf.srv2.de include:_spf.perfora.net include:_spf.kundenserver.de -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- apple-domain-verification=8KoGo2VpMEpKOMnn
- google-site-verification=--uxCF-5AdQh_IXExh7Fi051H8eopnNCbJWUFgX-AH0
- google-site-verification=5-7KHLLOznDtZePC0GbycOn5yfoxjYq70BIPn5pABfc
- SPFv=spf1 a mx a:out.herzstiftung.de ip4:80.237.138.0/24 ip4:80.237.132.0/24 ip4:80.237.133.0/24 ip4:87.230.47.0/24 ip4:212.227.191.245 ip4:212.227.17.12 ip6:2a01:488:42::/48 include:spf.protection.outlook.com include:spf.srv2.de include:_spf.perfora.net include:_spf.kundenserver.de -all
- MS=ms44371143
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