Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kolbgrading.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 20:26:14 UTC · ↺ Refresh
MX Hostnames
- kolbgrading-com.mail.protection.outlook.com
MX Priorities
- kolbgrading-com.mail.protection.outlook.com: 0
A / AAAA Records
- 15.197.225.128 ↩ aec037177372cc6cd.awsglobalaccelerator.com
- 3.33.251.168 ↩ aec037177372cc6cd.awsglobalaccelerator.com
Mail Server IPs
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns45.domaincontrol.com dns.jomax.net 2026031600 86400 7200 3600000 86400
Primary NS (mname)
ns45.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026031600
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns46.domaincontrol.com
ns45.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:20.88.29.21 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
5 records- sendinblue-code:74fb9127e23331090ce615a06d47d340
- dmlld3BvaW50X2F6dXJlX2NvbW1vbg==
- MS=ms97569179
- SPFv=spf1 ip4:20.88.29.21 include:spf.protection.outlook.com -all
- YXp1cmVfY29tbW9u
Full email verification for kolbgrading.com
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