Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
3k-kommunikation.de
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 02:45:57 UTC · ↺ Refresh
MX Hostnames
- mxa-0059cf01.gslb.pphosted.com
- mxb-0059cf01.gslb.pphosted.com
MX Priorities
- mxb-0059cf01.gslb.pphosted.com: 10
- mxa-0059cf01.gslb.pphosted.com: 10
A / AAAA Records
- 52.18.136.112 ↩ ec2-52-18-136-112.eu-west-1.compute.amazonaws.com
Mail Server IPs
- 205.220.165.126 ↩ mx0a-0059cf01.pphosted.com
- 205.220.177.126 ↩ mx0b-0059cf01.pphosted.com
SOA Record
Raw SOA
blue.foundationdns.com dns.cloudflare.com 2398309921 10000 2400 604800 1800
Primary NS (mname)
blue.foundationdns.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398309921
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
blue.foundationdns.org
blue.foundationdns.com
blue.foundationdns.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:205.220.179.40 ip4:205.220.168.132 ip4:205.220.165.126 ip4:205.220.177.126 mx ip4:130.180.116.250 include:spf.protection.outlook.com include:_spf.prod.hydra.sophos.com include:spf.crsend.com include:spf.augure.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; fo=1; adkim=r; aspf=r; rua=mailto:[email protected]; ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
6 records- MS=ms13307894
- MS=ms25002613
- google-site-verification=PKLYM6oKbVDC1h2Tg4yT5GHIBrZ33p-cOUK3hyEhk_Y
- google-site-verification=nAPAQmsJP4Adkaeasl6b5ZeXOwkwCngHCfL47WX2huo
- sophos-domain-verification=c9ed3b69efda27c11b96f883a4416809c7fa0f7a
- SPFv=spf1 ip4:205.220.179.40 ip4:205.220.168.132 ip4:205.220.165.126 ip4:205.220.177.126 mx ip4:130.180.116.250 include:spf.protection.outlook.com include:_spf.prod.hydra.sophos.com include:spf.crsend.com include:spf.augure.com -all
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