Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
guehring.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 10:30:17 UTC · ↺ Refresh
MX Hostnames
- mailsecure2.gbc.net
- mx1.guehring.de
MX Priorities
- mailsecure2.gbc.net: 20
- mx1.guehring.de: 10
A / AAAA Records
- 212.97.109.131 ↩ guehring.com
Mail Server IPs
- 212.97.96.211 ↩ mailsecure2.gbc.net
- 212.97.120.79 ↩ mx1.guehring.de
SOA Record
Raw SOA
ns.gbc.systems support.gbc.net 2026022602 3600 900 1209600 300
Primary NS (mname)
ns.gbc.systems
Admin Email (rname)
support@gbc.net
Serial
2026022602
Refresh
3600s
Retry
900s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns.gbc.gmbh
ns.gbc.red
ns.gbc.systems
ns.gbc.jetzt
ns.gbc.green
SPF Record
✓ Strict (-all)
v=spf1 include:spf.guehring.de -all
📊 DNS lookups: 1/10
✓ 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
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
11 records- atlassian-domain-verification=tIdrDxH3TuwUzhC2EFyFDByyMuu/vmGvD/EUHmuoQTX34Ebsa8q6d1acGvCaUc7E
- FKiAspXTJGZj+gIztBBzOS9aPthDoQf0iI1x/mk+aghqW4yzTwhC2a1VXGzwUzWI3WdinaabtWE9QcdrnN8akA==
- g61qr9ulm0sth2ikeclee2hbqq
- google-site-verification=7OLKonbIp_4L54w051HXCok2Zbdi57hjP_DFK1R9da0
- 991ibos8mb9b4h2d88kat97fsq
- SPFv=spf1 include:spf.guehring.de -all
- MS=ms69101077
- atlassian-sending-domain-verification=c8b0d399-8222-4771-b31b-c81ac19f55b4
- q092djdltb26toa26linhm94u0
- knowbe4-site-verification=9d0f4df6f13825cf34e369b1b9ed1921
- brevo-code:d5daed1268ba960b5b95571bc97f3411
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