Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
key-systems.net
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 09:50:02 UTC · ↺ Refresh
MX Hostnames
- keysystems-net0i.mail.protection.outlook.com
MX Priorities
- keysystems-net0i.mail.protection.outlook.com: 0
A / AAAA Records
- 172.66.160.99 (no PTR)
- 104.20.40.254 (no PTR)
Mail Server IPs
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
SOA Record
Raw SOA
pdns109.ultradns.com tech.key-systems.net 2025124739 3600 600 604800 180
Primary NS (mname)
pdns109.ultradns.com
Admin Email (rname)
tech@key-systems.net
Serial
2025124739
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
180s
Nameservers (NS)
pdns109.ultradns.org
pdns109.ultradns.biz
pdns109.ultradns.com
pdns109.ultradns.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.key-systems.net include:_spf.google.com include:stspg-customer.com include:mail.zendesk.com include:spf.protection.outlook.com include:_spf.smtp.mailtrap.live ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
google._domainkey
dkim._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- SPFv=spf1 include:spf.key-systems.net include:_spf.google.com include:stspg-customer.com include:mail.zendesk.com include:spf.protection.outlook.com include:_spf.smtp.mailtrap.live ~all
- MS=ms27472658
- via RC0 to UltraDNS v2 after signing
- status-page-domain-verification=gb4c1d4b76p0
Full email verification for key-systems.net
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits