Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gutjahr.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 17:58:53 UTC · ↺ Refresh
MX Hostnames
- gutjahr-com.mail.protection.outlook.com
MX Priorities
- gutjahr-com.mail.protection.outlook.com: 10
A / AAAA Records
- 91.99.56.51 ↩ static.51.56.99.91.clients.your-server.de
- 2a01:4f8:1c1a:43a7::1 ↩ static.1.43a7.1c1a.4f8.2a01.clients.your-server.de
Mail Server IPs
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1061.ui-dns.com hostmaster.1und1.de 2017072599 28800 7200 604800 300
Primary NS (mname)
ns1061.ui-dns.com
Admin Email (rname)
hostmaster@1und1.de
Serial
2017072599
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1061.ui-dns.de
ns1061.ui-dns.com
ns1061.ui-dns.biz
ns1061.ui-dns.org
SPF Record
✓ Strict (-all)
v=spf1 a mx include:spf.protection.outlook.com include:_spf.senders.scnem.com include:spf.ardex.de ip4:213.9.20.169 ip4:217.18.190.4 ip4:217.113.177.33 ip4:94.130.108.93 ip4:85.214.201.193 ip6:2a01:4f8:1c1c:e9a0::1 -all
📊 DNS lookups: 5/10
✓ 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: 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- MS=ms66743643
- google-site-verification=nEdXFWtlVdi4WmefPuYPPYxqqZPj-yGWPlKWLAP0Myo
- SPFv=spf1 a mx include:spf.protection.outlook.com include:_spf.senders.scnem.com include:spf.ardex.de ip4:213.9.20.169 ip4:217.18.190.4 ip4:217.113.177.33 ip4:94.130.108.93 ip4:85.214.201.193 ip6:2a01:4f8:1c1c:e9a0::1 -all
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