signal-iduna.de

Valid Email Server
Domain Lookup › signal-iduna.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
signal-iduna.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-31 09:52:23 UTC · ↺ Refresh

MX Hostnames

  • ms01.signal-iduna.de
  • ms02.signal-iduna.de

MX Priorities

  • ms01.signal-iduna.de: 30
  • ms02.signal-iduna.de: 30

A / AAAA Records

  • 151.101.3.10 (no PTR)
  • 151.101.195.10 (no PTR)
  • 151.101.131.10 (no PTR)
  • 151.101.67.10 (no PTR)

Mail Server IPs

  • 5.183.138.29 ↩ ms01.signal-iduna.de
  • 5.183.138.30 ↩ ms02.signal-iduna.de

SOA Record

Raw SOA ns.signal-iduna.de dnsadmin.signal-iduna.de 2026031801 86400 10800 604800 43200
Primary NS (mname)
ns.signal-iduna.de
Admin Email (rname)
dnsadmin@signal-iduna.de
Serial
2026031801
Refresh
86400s
Retry
10800s
Expire
604800s
Minimum TTL
43200s

Nameservers (NS)

pns.dtag.de
secondary004.dtag.net
ns.signal-iduna.de
ns-sec.signal-iduna.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:5.183.138.29 ip4:5.183.138.30 ip4:136.243.167.68 ip6:2a01:4f8:d0a:6244::2 ip4:5.183.138.149 ip4:5.183.138.50 ip4:84.17.184.253 ip4:5.183.138.150 ip4:5.183.139.14 ip4:5.183.139.15 ip4:212.99.200.114 ip4:80.82.202.182 ip4:185.98.184.0/24 ip4:80.82.206.0/26 ip4:5.183.138.86 ip4:5.183.138.87 ip4:5.183.138.88 ip4:5.183.138.89 include:spf.sendinblue.com include:spf.protection.outlook.com include:spf.mailjet.com include:spf.servicemail24.de -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; fo=1; ri=3600; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

13 records
  • D-TRUST=5A25RIKKJGYHW7T4QLNYCFW
  • SPFv=spf1 ip4:5.183.138.29 ip4:5.183.138.30 ip4:136.243.167.68 ip6:2a01:4f8:d0a:6244::2 ip4:5.183.138.149 ip4:5.183.138.50 ip4:84.17.184.253 ip4:5.183.138.150 ip4:5.183.139.14 ip4:5.183.139.15 ip4:212.99.200.114 ip4:80.82.202.182 ip4:185.98.184.0/24 ip4:80.82.206.0/26 ip4:5.183.138.86 ip4:5.183.138.87 ip4:5.183.138.88 ip4:5.183.138.89 include:spf.sendinblue.com include:spf.protection.outlook.com include:spf.mailjet.com include:spf.servicemail24.de -all
  • google-site-verification=iO7xq5v-J8DnP9Gjkp7hq6Sg9M5NCpb5yMaI45vNDug
  • 3fdnglc9xlqhx3psv7w65wdhyq72dh1r
  • Y2mlAOOX3lu7ipE80qfwOXYR0H7+LIQewkFMzkKl11TRFR5uBARErw0Ny2/2iNRFkoCIJmiNwcIlcF0P1ONp1w==
  • miro-verification=d965d1f7ab52165ae6e97240bbfcf274abb5025d
  • google-site-verification=ACefEcvN05QV1TftkUATockChgGaoO2JRdZhQ21K9vo
  • MS=ms52024886
  • cqbbh2rdjwzj9hndx13x3nzzm9y0pv80
  • mongodb-site-verification=lPb3wsNtngcs7YRKReNo2RloHBBPveDe
  • _telesec-domain-validation=348997_2025-05-09_ZuUi0PtPMQ8v3PtFiYPu9sw4y3eGjhsR1ZM7ZSSVqhfiG5gqgB
  • google-gws-recovery-domain-verification=45629948
  • swisssign-check=_JuNmc11UClG08v0S8sGKun4YXA
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for signal-iduna.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits