Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
techbriefs.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 17:57:55 UTC · ↺ Refresh
MX Hostnames
- techbriefs-com.mail.protection.outlook.com
MX Priorities
- techbriefs-com.mail.protection.outlook.com: 0
A / AAAA Records
- 52.5.61.5 ↩ aws.techbriefs.com
Mail Server IPs
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-702.awsdns-23.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-702.awsdns-23.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1292.awsdns-33.org
ns-19.awsdns-02.com
ns-2005.awsdns-58.co.uk
ns-702.awsdns-23.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:contest.techbriefs.com a:techbriefs.com a:authsmtp.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; fo=0
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 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
4 records- MS=ms28985951
- dropbox-domain-verification=k395rthm501g
- google-site-verification=csUA75XV_bDI6uoU9xjvbSy5lwHew02wXcn1XwfkGaA
- SPFv=spf1 include:spf.protection.outlook.com include:contest.techbriefs.com a:techbriefs.com a:authsmtp.com -all
Full email verification for techbriefs.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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