Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
crbr.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 06:35:40 UTC · ↺ Refresh
MX Hostnames
- mxb.mailgun.org
- mxa.mailgun.org
- crbr-com.mail.protection.outlook.com
MX Priorities
- crbr-com.mail.protection.outlook.com: 0
- mxa.mailgun.org: 10
- mxb.mailgun.org: 10
A / AAAA Records
- 34.213.142.243
Mail Server IPs
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.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:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f90c:: ↩ mail-sn1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 34.160.13.42 ↩ 42.13.160.34.bc.googleusercontent.com
- 34.149.236.64 ↩ 64.236.149.34.bc.googleusercontent.com
SOA Record
Raw SOA
ns-1341.awsdns-39.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1341.awsdns-39.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1341.awsdns-39.org
ns-1811.awsdns-34.co.uk
ns-285.awsdns-35.com
ns-738.awsdns-28.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:cloud-out-c.spamtitan.com include:cloud-out-d.spamtitan.com a:mail.crbr.com ip4:12.5.0.150 ip4:45.26.119.233 ip4:12.71.36.34 ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; fo=1; ri=3600; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],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- v=verifydomain MS=4821793
- apple-domain-verification=xKarjt0sD0Hqv23h
- SPFv=spf1 include:spf.protection.outlook.com include:cloud-out-c.spamtitan.com include:cloud-out-d.spamtitan.com a:mail.crbr.com ip4:12.5.0.150 ip4:45.26.119.233 ip4:12.71.36.34 ~all
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