Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
grs.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-27 17:48:21 UTC · ↺ Refresh
MX Hostnames
- grs-de.mail.protection.outlook.com
MX Priorities
- grs-de.mail.protection.outlook.com: 0
A / AAAA Records
- 151.101.2.216 (no PTR)
- 151.101.66.216 (no PTR)
- 151.101.130.216
- 151.101.194.216
Mail Server IPs
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.grs.de abuse.grs.de 2023070523 10800 1800 2419200 900
Primary NS (mname)
dns1.grs.de
Admin Email (rname)
abuse@grs.de
Serial
2023070523
Refresh
10800s
Retry
1800s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
dns2.grs.de
dns1.grs.de
dns-1.dfn.de
dns-3.dfn.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:193.174.114.136 ip4:194.94.143.129 ip4:193.174.229.206 include:spf.protection.outlook.com include:em1083.grs.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 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
2 records- SPFv=spf1 ip4:193.174.114.136 ip4:194.94.143.129 ip4:193.174.229.206 include:spf.protection.outlook.com include:em1083.grs.de -all
- a+df7rDUJf1ePbRe2iaRKXIezjRZ4LtdwXH8iX78XdeimSYwLW6HxU6k12Yl/ZWAs0iuqOSNMmtfJyPxzLPztg==
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