iwkoeln.de

Valid Email Server
Domain Lookup › iwkoeln.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
iwkoeln.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-27 20:03:24 UTC · ↺ Refresh

MX Hostnames

  • mx1.mas.t-systems-service.com
  • mx3.mas.t-systems-service.com
  • mx2.mas.t-systems-service.com

MX Priorities

  • mx2.mas.t-systems-service.com: 20
  • mx3.mas.t-systems-service.com: 30
  • mx1.mas.t-systems-service.com: 10

A / AAAA Records

  • 78.47.106.28 ↩ dedi4929.your-server.de

Mail Server IPs

  • 46.29.101.1 ↩ muc-mta01.mas.t-systems-service.com
  • 217.150.155.12 ↩ mgb-mta02.mas.t-systems-service.com
  • 217.150.155.10 ↩ mgb-mta01.mas.t-systems-service.com
  • 46.29.101.2 ↩ muc-mta02.mas.t-systems-service.com
  • 94.100.254.155 ↩ ffm-mta01.mas.t-systems-service.com

SOA Record

Raw SOA ns27.domaincontrol.com dns.jomax.net 2026022602 28800 7200 604800 600
Primary NS (mname)
ns27.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026022602
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns27.domaincontrol.com
ns28.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 a:spf.mas.t-systems-service.com a:k60828.coveto.de include:spf.mailjet.com ip4:87.79.12.44 ip4:87.79.12.45 ip4:89.1.85.243 ip4:176.9.21.28 ip4:212.114.35.242 ip4:212.114.34.232 ip4:212.114.34.50 ip4:212.114.35.226 ip4:85.13.129.239 ip4:172.16.244.130 ip4:87.79.12.40 ip4:172.16.244.15 ip4:79.142.32.16 include:sendgrid.net include:spf.protection.outlook.com include:spf.crsend.com include:_spf.recruiting-portal.com include:spf.orbit.teamleader.eu -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → 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

8 records
  • 201712141416045uyjvkj5xn41l2usoc381vrf7d3xz85whzsn1v3kqpsra7fqkk
  • apple-domain-verification=tGiIYiXI0xJvPAfO
  • X/ZeVzL7IhK6TSKlO3Kw3dug2Xzslbq2WdKEa/2YtkYYx4aOqWOs+yQo21J4TcOFuoI5xwPERNtZXDojla+rQw==
  • DBDAA6EF044D9C98596D5E19F0A712E66805CC23
  • atlassian-domain-verification=uPRmh1XxvV032a8zKbaxvNI0ZnojyP6cXHYoYFCTHaM9sPli8fciIsGXz6yBzz1t
  • linkedin-site-verification=351659d6-e7ea-4a8a-b732-7fa4481f4a93
  • google-site-verification=vwZaS5UefEAQ3Tsxbh_CqJPxhoE0VT2L3HwFQc4C_9U
  • SPFv=spf1 a:spf.mas.t-systems-service.com a:k60828.coveto.de include:spf.mailjet.com ip4:87.79.12.44 ip4:87.79.12.45 ip4:89.1.85.243 ip4:176.9.21.28 ip4:212.114.35.242 ip4:212.114.34.232 ip4:212.114.34.50 ip4:212.114.35.226 ip4:85.13.129.239 ip4:172.16.244.130 ip4:87.79.12.40 ip4:172.16.244.15 ip4:79.142.32.16 include:sendgrid.net include:spf.protection.outlook.com include:spf.crsend.com include:_spf.recruiting-portal.com include:spf.orbit.teamleader.eu -all
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