Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sack-kiesselbach.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 22:04:48 UTC · ↺ Refresh
MX Hostnames
- sackkiesselbach-de01b.mail.protection.outlook.com
MX Priorities
- sackkiesselbach-de01b.mail.protection.outlook.com: 0
A / AAAA Records
- 217.160.0.194 ↩ 217-160-0-194.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::279 ↩ 2001-08d8-100f-f000-0000-0000-0000-0279.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1069.ui-dns.de hostmaster.schlund.de 2017080783 28800 7200 604800 300
Primary NS (mname)
ns1069.ui-dns.de
Admin Email (rname)
hostmaster@schlund.de
Serial
2017080783
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1069.ui-dns.de
ns1069.ui-dns.org
ns1069.ui-dns.biz
ns1069.ui-dns.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:80.153.18.228 include:sendinblue.com include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; sp=none; rua=mailto:[email protected]!10m; ruf=mailto:[email protected]!10m; rf=afrf; pct=100; ri=86400
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]!10m
↳ Subdomain policy: none
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
5 records- 3pdqda1lg0oshkc094okepo791
- Sendinblue-code:96744c9398294b8e39eb325a100c8c05
- MS=ms70006450
- SPFv=spf1 ip4:80.153.18.228 include:sendinblue.com include:spf.protection.outlook.com -all
- v=verifydomain MS=8639864
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 sack-kiesselbach.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits