Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
erf.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 13:04:41 UTC · ↺ Refresh
MX Hostnames
- erf-de.mail.protection.outlook.com
MX Priorities
- erf-de.mail.protection.outlook.com: 0
A / AAAA Records
- 104.26.0.175 (no PTR)
- 104.26.1.175 (no PTR)
- 172.67.71.244
- 2606:4700:20::681a:af
- 2606:4700:20::ac43:47f4
- 2606:4700:20::681a:1af
Mail Server IPs
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
- 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
cleo.ns.cloudflare.com dns.cloudflare.com 2399232586 10000 2400 604800 1800
Primary NS (mname)
cleo.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399232586
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
serena.ns.cloudflare.com
cleo.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:195.248.89.10 ip4:109.91.166.37 ip4:46.4.4.115 ip4:46.4.4.25 ip4:46.229.46.39 ip4:212.162.53.160 ip4:46.229.46.157 include:spf.protection.outlook.com include:spf.emailsys.net include:mailgun.org -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected],mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected],mailto:[email protected];adkim=s;aspf=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
12 records- d365mktkey=hVyVOmS5zLvrX8FFZ4fFCx4sRHkLLzGQLNMP7Wjdc64x
- google-site-verification=9YZ0uHyF_hfm6AAiPVQkct_E0UgiRtUWy16iZXbYg_U
- lw=635feb61476501a50a9afd00
- stripe-verification=f106283b2a50192b586cd3861d330fc8cf41ff71c9b1d10d394f6941e54c1de0
- SPFv=spf1 a mx ip4:195.248.89.10 ip4:109.91.166.37 ip4:46.4.4.115 ip4:46.4.4.25 ip4:46.229.46.39 ip4:212.162.53.160 ip4:46.229.46.157 include:spf.protection.outlook.com include:spf.emailsys.net include:mailgun.org -all
- 6TX77poa1CUkctBYjEDxEPt12W58r4Cchlm5xYjhAM/zoNg7ouzDFkL5iCO0Y9nEtR05wW8RGJWnSOyVw0iF4w==
- MS=ms31202516
- anthropic-domain-verification-wxctgw=iOSmhET5uIDPHTJetTMMjHLOP
- apple-domain-verification=SDA3VRjCS9bA2QAs
- canva-site-verification=CQbVyYUTtZZOBEJnSfQy1w
- d365mktkey=2kk8oxs445uskdi2qoi9kedr1
- d365mktkey=dWMY0liLjjZHWZIi94gbbw2C2GRbpJLlb0Nx5MCE60kx
Full email verification for erf.de
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