Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
deltalight.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 16:25:36 UTC · ↺ Refresh
MX Hostnames
- deltalight-de.mail.protection.outlook.com
MX Priorities
- deltalight-de.mail.protection.outlook.com: 0
A / AAAA Records
- 217.19.238.165 ↩ 217.19.238.165.static.hosted.by.combell.com
Mail Server IPs
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.rrpproxy.net tech.rrpproxy.net 2024020600 10800 3600 604800 28800
Primary NS (mname)
ns1.rrpproxy.net
Admin Email (rname)
tech@rrpproxy.net
Serial
2024020600
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
28800s
Nameservers (NS)
ns1.rrpproxy.net
ns2.rrpproxy.net
ns3.rrpproxy.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:51.105.250.113 ip4:62.156.144.118 include:spf.protection.outlook.com include:_spf.eu.messagegears.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 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- zone-ownership-verification-a5339ea9910a479af030fef4ed24c8fe7c7853d088b6c1988d13ebfea8764100ebfea8764100
- SPFv=spf1 ip4:51.105.250.113 ip4:62.156.144.118 include:spf.protection.outlook.com include:_spf.eu.messagegears.net -all
- v=verifydomain MS=5297372
- knowbe4-site-verification=a832d26e90cc636a981633085b23e4b7
- MS=ms71259551
- google-site-verification=gGSEac73L1USIqyLaJibKkCC5IpqiTiRrDHDTGUKwuw
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 deltalight.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits