rff.de

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rff.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-25 12:05:00 UTC · ↺ Refresh

MX Hostnames

  • rff-de.mail.protection.outlook.com

MX Priorities

  • rff-de.mail.protection.outlook.com: 10

A / AAAA Records

  • 81.209.131.15 ↩ support.brenet.de

Mail Server IPs

  • 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
  • 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
  • 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
  • 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.brenet.de hostmaster.brenet.de 2025120100 10800 3600 604800 86400
Primary NS (mname)
ns1.brenet.de
Admin Email (rname)
hostmaster@brenet.de
Serial
2025120100
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns3.brenet.de
ns2.brenet.de
ns1.brenet.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:212.211.156.192 ip4:81.209.130.0/23 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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

7 records
  • _6niym1bf727rnvru06a7nnes9rvg24r
  • google-site-verification=8FBXK2rgz73sODsN4PynhY-VHqhj1ts6mQPsOdQPYMk
  • apple-domain-verification=v9RT1hvmgjJetg9G
  • SPFv=spf1 ip4:212.211.156.192 ip4:81.209.130.0/23 include:spf.protection.outlook.com -all
  • 2023101915213054fxan6zjbts142rm8gs2so0vq46y44sd3345f40hufjvxil1x
  • 8c78r317lb7p7lnxlb4h3hcf4gkt853g
  • fortinet-fortiphish-site-verification=PDXVjrX6VeVqxgBreQ4R7P
Full email verification for rff.de

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits