Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
knettenbrech-gurdulic.de
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 07:19:08 UTC · ↺ Refresh
MX Hostnames
- d336386.b.ess.de.barracudanetworks.com
- d336386.a.ess.de.barracudanetworks.com
MX Priorities
- d336386.a.ess.de.barracudanetworks.com: 10
- d336386.b.ess.de.barracudanetworks.com: 20
A / AAAA Records
- 217.160.0.140 ↩ 217-160-0-140.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::28d ↩ 2001-08d8-100f-f000-0000-0000-0000-028d.elastic-ssl.ui-r.com
Mail Server IPs
- 18.185.115.252 ↩ mail.ess.de.barracuda.com
- 18.185.115.250 ↩ mail.ess.de.barracuda.com
- 18.185.115.251 ↩ mail.ess.de.barracuda.com
SOA Record
Raw SOA
ns.ui-global-dns.de hostmaster.1und1.com 2017060174 28800 7200 604800 600
Primary NS (mname)
ns.ui-global-dns.de
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060174
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns.ui-global-dns.biz
ns.ui-global-dns.org
ns.ui-global-dns.com
ns.ui-global-dns.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.ess.de.barracudanetworks.com include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ 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
4 records- 1password-site-verification=UUDMMVBZPRGGJFBTPWW4GWNOPM
- apple-domain-verification=OQnuXOhcYGCwldW7
- SPFv=spf1 include:spf.ess.de.barracudanetworks.com include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
- B5xdq0A5XRxSPeN4DgLyZiS/wujTULpE1AVY/f032eU=
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