Domain Overview
DNS: ✓ 20d ago
Checker: ✓ 20d ago
gradeconstruction.net
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 00:26:40 UTC · ↺ Refresh
MX Hostnames
- gradeconstruction-net.mail.protection.outlook.com
MX Priorities
- gradeconstruction-net.mail.protection.outlook.com: 10
A / AAAA Records
- 143.42.119.104 ↩ 143-42-119-104.ip.linodeusercontent.com
Mail Server IPs
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
- 52.101.11.10 ↩ mail-sa9pr03cu00202.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:f902::2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
dns101.register.com root.register.com 126042807 10800 3600 604800 3600
Primary NS (mname)
dns101.register.com
Admin Email (rname)
root@register.com
Serial
126042807
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns101.register.com
dns102.register.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spfa.cpmails.com include:sendgrid.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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- google-site-verification=CJGjNhbDmOwlEUIX3FX1LFRw9dKRS3U6tCumQEJIpwk
- SPFv=spf1 include:spf.protection.outlook.com include:spfa.cpmails.com include:sendgrid.net -all
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