Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
g-u.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 16:48:17 UTC · ↺ Refresh
MX Hostnames
- gu-de0c.mail.protection.outlook.com
MX Priorities
- gu-de0c.mail.protection.outlook.com: 10
A / AAAA Records
- 20.218.77.96 (no PTR)
Mail Server IPs
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.f5clouddns.com f5xc-dns.f5.com 2025121505 86400 7200 360000 1800
Primary NS (mname)
ns1.f5clouddns.com
Admin Email (rname)
f5xc-dns@f5.com
Serial
2025121505
Refresh
86400s
Retry
7200s
Expire
360000s
Minimum TTL
1800s
Nameservers (NS)
ns1.f5clouddns.com
ns2.f5clouddns.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.g-u.de include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=0;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
9 records- bw=BAn9hlJ3hizfFCforRM5PW7UnSpj49ScixfCNOt23tJc
- docusign=b1d34cc9-9e52-4c5c-b18a-59f855765db9
- DMARCv=DMARC1; p=reject; fo=0;
- 2gmvgck8lakiain9fg85h2m3gk
- atlassian-domain-verification=3EVpwT3XWOqgOaQ2dyUMpqqXNXLNrabvQzlkmz5x44FI2YtDTrMvyOQD5TUdryOp
- google-site-verification=nDGh6XbazOiYms7sOY2w8kMLBpLW4Nqur1YXir5oAI0
- Rk496hAeqBsXZQLOgeVynnbgfN0siGRiyVFqFaaOeqgKSAMexNnGYqIfmYcfp68PrG3f4xihsnJhKpR6CSIUmA==
- SPFv=spf1 include:_spf.g-u.de include:spf.protection.outlook.com -all
- MS=ms93330514
Full email verification for g-u.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits