Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
grethel.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-24 05:24:42 UTC · ↺ Refresh
MX Hostnames
- mx04.hornetsecurity.com
- grethel-de.mail.protection.outlook.com
- mx01.hornetsecurity.com
- mx03.hornetsecurity.com
- mx02.hornetsecurity.com
MX Priorities
- mx01.hornetsecurity.com: 10
- mx02.hornetsecurity.com: 20
- mx04.hornetsecurity.com: 40
- mx03.hornetsecurity.com: 30
- grethel-de.mail.protection.outlook.com: 50
A / AAAA Records
- 178.33.38.97
Mail Server IPs
- 94.100.132.8 ↩ mx01.hornetsecurity.com
- 94.100.136.8 ↩ mx02.hornetsecurity.com
- 94.100.136.7 ↩ mx04.hornetsecurity.com
- 94.100.134.8 ↩ mx03.hornetsecurity.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2
- 2a01:111:f403:ca2d::
SOA Record
Raw SOA
a.ns14.net info.proxyblue.de 2025052002 43200 7200 1209600 3600
Primary NS (mname)
a.ns14.net
Admin Email (rname)
info@proxyblue.de
Serial
2025052002
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
c.ns14.net
b.ns14.net
a.ns14.net
d.ns14.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:92.79.91.26 ip4:82.165.59.174 ip4:37.228.167.82 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
✓ Public key: 392 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
3 records- SPFv=spf1 ip4:92.79.91.26 ip4:82.165.59.174 ip4:37.228.167.82 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all
- brevo-code:c0700f052650ed7960f773702c01db24
- MS=ms50426754
Full email verification for grethel.de
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