Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kostmayer.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 04:51:37 UTC · ↺ Refresh
MX Hostnames
- kostmayer-com.mail.protection.outlook.com
MX Priorities
- kostmayer-com.mail.protection.outlook.com: 0
A / AAAA Records
- 66.172.32.76 ↩ 76.dotxhosting.com
Mail Server IPs
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
nsa.idsno.net hostmaster.idsno.net 2017110302 3600 900 604800 3600
Primary NS (mname)
nsa.idsno.net
Admin Email (rname)
hostmaster@idsno.net
Serial
2017110302
Refresh
3600s
Retry
900s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
hosted-d.dns.unitifiber.com
hosted-e.dns.unitifiber.com
hosted-b.dns.unitifiber.com
hosted-c.dns.unitifiber.com
hosted-a.dns.unitifiber.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;fo=1;pct=100;adkim=s;aspf=s;ruf=mailto:[email protected];rua=mailto:[email protected];ri=28800;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
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
3 records- MS=ms70011009
- 0ed1fe018a8e1ba66abfac48e782266fcc3210f69a
- SPFv=spf1 include:spf.protection.outlook.com -all
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