Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
blockdev.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 17:45:29 UTC · ↺ Refresh
MX Hostnames
- blockdev-com.mail.protection.outlook.com
MX Priorities
- blockdev-com.mail.protection.outlook.com: 1
A / AAAA Records
- 141.193.213.11 (no PTR)
- 141.193.213.10 (no PTR)
Mail Server IPs
- 52.101.190.0 ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
- 52.101.190.2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 52.101.190.1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
- 52.101.192.1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 2a01:111:f403:c944::1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 2a01:111:f403:c942::2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 2a01:111:f403:c942:: ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c942::3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
SOA Record
Raw SOA
dax.ns.cloudflare.com dns.cloudflare.com 2397006626 10000 2400 604800 1800
Primary NS (mname)
dax.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397006626
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
dora.ns.cloudflare.com
dax.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:zeptomail.net include:spf.protection.outlook.com include:spf-ca.emailsignatures365.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;sp=none;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;aspf=r;adkim=r;fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 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- have-i-been-pwned-verification=68aa232315b14b06c850db00e207a016
- SPFv=spf1 include:zeptomail.net include:spf.protection.outlook.com include:spf-ca.emailsignatures365.com -all
Full email verification for blockdev.com
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