Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
btk-fh.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 19:20:49 UTC · ↺ Refresh
MX Hostnames
- mail.btk-fh.de
- btkfh-de0i.mail.protection.outlook.com
MX Priorities
- btkfh-de0i.mail.protection.outlook.com: 10
- mail.btk-fh.de: 20
A / AAAA Records
- 78.47.73.202 ↩ dedi3886.your-server.de
Mail Server IPs
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
- 195.226.166.5 (no PTR)
SOA Record
Raw SOA
ns.udag.de hostmaster.united-domains.de 2023121508 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2023121508
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns.udag.de
ns.udag.net
ns.udag.org
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:134.119.24.175 ip4:188.111.43.177 ip4:188.111.43.156 ip4:195.226.166.0/26 ip4:78.47.73.202 include:amazonses.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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
2 records- MS=ms58576068
- SPFv=spf1 ip4:134.119.24.175 ip4:188.111.43.177 ip4:188.111.43.156 ip4:195.226.166.0/26 ip4:78.47.73.202 include:amazonses.com include:spf.protection.outlook.com ~all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for btk-fh.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits