swm-infrastruktur.de

Valid Email Server
Domain Lookup › swm-infrastruktur.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
swm-infrastruktur.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 10:40:50 UTC · ↺ Refresh

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MX Hostnames

  • mail2.swm.de
  • mail1.swm.de

MX Priorities

  • mail2.swm.de: 20
  • mail1.swm.de: 10

A / AAAA Records

  • 188.164.238.43 (no PTR)
  • 2a03:a080:200:105:adc:1:bca4:ee2b (no PTR)

Mail Server IPs

  • 188.164.233.73 ↩ mail2.swm.de
  • 188.164.233.71 ↩ mail1.swm.de

SOA Record

Raw SOA ns1.m-online.net hostmaster.m-net.de 2026030200 3600 1800 3600000 600
Primary NS (mname)
ns1.m-online.net
Admin Email (rname)
hostmaster@m-net.de
Serial
2026030200
Refresh
3600s
Retry
1800s
Expire
3600000s
Minimum TTL
600s

Nameservers (NS)

ns2.m-online.net
ns3.m-online.net
ns4.m-online.net
ns1.m-online.net

SPF Record

✓ Strict (-all)
v=spf1 mx a:newsletter.swm.de ip4:62.138.242.21 ip4:188.164.232.245 ip4:144.76.78.17 include:spf.protection.outlook.com include:spf.crsend.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail

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

All TXT Records

15 records
  • SPFv=spf1 mx a:newsletter.swm.de ip4:62.138.242.21 ip4:188.164.232.245 ip4:144.76.78.17 include:spf.protection.outlook.com include:spf.crsend.com -all
  • GeLcjw56kukzljzneQxWmNigKQESFw16b9KZZnJMB18
  • RLzBxOVXSDriu0IThePZMh3aFFzoWRUaTO4695b40RQ=
  • _globalsign-domain-verification=uKzDGO6I-y-nTQOZ-Q4X_BoSUWV__1oIEVYnkrMNOS
  • GeLcjw56kukzljzneQxWmNigKQESFw16b9KZZnJMB18=
  • _globalsign-domain-verification=xKiXxyAbzDaVS4aeXIfq9Z8dWUnmgdI8qCcTeHznlP
  • _telesec-domain-validation=347094_2025-06-13_oBm8B0nmq4TUhg8Fe5abr9E3wuOwJO7sbVEJNZA8cCI8KvZ9wy
  • MS=ms16001098
  • adobe-idp-site-verification=d91135b0fa7276cad3079fd6d3bf476617822a8e3e85d7d154d53e017f15617a
  • _telesec-domain-validation=2023-03-31_azeftQlxm88GbLGlwP4DgAM3AUSKygjcBRtcO2UBTYnhkp0QIR
  • globalsign-domain-verification=Q2ytF4e-43hsx9FSNnYQDM3KcenXj8xctExm71V3Ik
  • _telesec-domain-validation=335332_2024-05-08_IPBkcFc0Dl55fb2JPdICLNrpD3p5uGNpoZ9e3ryfVPjYyNRhUV
  • _globalsign-domain-verification=JV-se-JTkjzBjrgY2vFNXBSXUAut3Ww81JUuHdqu4H
  • _telesec-domain-validation=350739_2026-02-27_oPSoV1lq8EOKqC3sCwtkS9t6mXmWG8iedppkDunaQGopgAxdLC
  • ms-domain-verification=865f6515-df26-4f03-9d6a-472804228ae7
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