Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dertrupp.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 07:08:34 UTC · ↺ Refresh
MX Hostnames
- mx10.antispam.mailspamprotection.com
- mx20.antispam.mailspamprotection.com
- mx30.antispam.mailspamprotection.com
MX Priorities
- mx30.antispam.mailspamprotection.com: 30
- mx10.antispam.mailspamprotection.com: 10
- mx20.antispam.mailspamprotection.com: 20
A / AAAA Records
- 34.120.190.48 ↩ 48.190.120.34.bc.googleusercontent.com
- 35.227.194.51 ↩ 51.194.227.35.bc.googleusercontent.com
- 35.244.153.44 ↩ 44.153.244.35.bc.googleusercontent.com
- 34.160.17.71 ↩ 71.17.160.34.bc.googleusercontent.com
Mail Server IPs
- 34.111.121.216 ↩ 216.121.111.34.bc.googleusercontent.com
- 34.149.79.66 ↩ 66.79.149.34.bc.googleusercontent.com
- 34.120.156.61 ↩ 61.156.120.34.bc.googleusercontent.com
SOA Record
Raw SOA
ns1.siteground.net admins.siteground.com 171 86400 7200 3600000 86400
Primary NS (mname)
ns1.siteground.net
Admin Email (rname)
admins@siteground.com
Serial
171
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns1.siteground.net
ns2.siteground.net
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.brevo.com include:dertrupp.de.spf.auto.dnssmarthost.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; aspf=s; adkim=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- google-site-verification=5lOOhNWuc5FqdjVLeg52ixx5Qvl4jZ2jIWlL5WX85AY
- SPFv=spf1 include:_spf.brevo.com include:dertrupp.de.spf.auto.dnssmarthost.net -all
- brevo-code:49561e0d71e0ed2209bb214a5895e467
Full email verification for dertrupp.de
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