Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
keriengineering.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-19 08:54:15 UTC · ↺ Refresh
MX Hostnames
- keriengineering-com.mail.protection.outlook.com
MX Priorities
- keriengineering-com.mail.protection.outlook.com: 0
A / AAAA Records
- 74.208.236.145 ↩ 74-208-236-145.elastic-ssl.ui-r.com
- 2607:f1c0:100f:f000::280 ↩ 2607-f1c0-100f-f000-0000-0000-0000-0280.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 2a01:111:f403:f802::2 ↩ mail-sj2pr05cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1070.ui-dns.org hostmaster.1and1.com 2017061515 28800 7200 604800 300
Primary NS (mname)
ns1070.ui-dns.org
Admin Email (rname)
hostmaster@1and1.com
Serial
2017061515
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1070.ui-dns.biz
ns1070.ui-dns.com
ns1070.ui-dns.de
ns1070.ui-dns.org
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; ruf=mailto:[email protected]; rua=mailto:[email protected]; pct=100; sp=none; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
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
2 records- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms49181052
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