Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
united-systems.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 23:27:20 UTC · ↺ Refresh
MX Hostnames
- unitedsystems-de01e.mail.protection.outlook.com
MX Priorities
- unitedsystems-de01e.mail.protection.outlook.com: 10
A / AAAA Records
- 81.169.145.163 ↩ wa3.rzone.de
- 2a01:238:20a:202:1163:: ↩ wa3.rzone.de
Mail Server IPs
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
SOA Record
Raw SOA
docks07.rzone.de hostmaster.strato-rz.de 2022022194 86400 7200 604800 300
Primary NS (mname)
docks07.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2022022194
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks07.rzone.de
shades16.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:94.134.207.228 ip4:46.245.183.178 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
6 records- SPFv=spf1 mx ip4:94.134.207.228 ip4:46.245.183.178 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
- atlassian-domain-verification=VO2QGPnPptfD1pzaakRjTMDsYyGtaRgdQwARgrIKVydGZohExIuzCJK53X1qQAoG
- apple-domain-verification=bFUo6RQFfAsbix0a
- di897AYl6btzLljR+GvC/5+Wd1szh3ti6fri9/wH3vwzw2I59W9howCaEBULe48WtcCz7Io4ArJn/Yd0j7UZxw==
- MS=ms3921922
- En9VU8lvWzVM9a5w+Oy8mIbzsZKehWcWZjRYgxUvltN2ZFoqM64mG3y8SezxBAnaXOSTs/zmjSVTAxXenqHpKQ==
Full email verification for united-systems.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits