Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
diamondbackenergy.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 22:54:08 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 0
- us-smtp-inbound-1.mimecast.com: 0
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns-1301.awsdns-34.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1301.awsdns-34.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1301.awsdns-34.org
ns-1891.awsdns-44.co.uk
ns-446.awsdns-55.com
ns-697.awsdns-23.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:12.219.226.150/32 ip4:12.55.120.176/32 ip4:12.237.96.150/32 ip4:12.55.98.230/32 ip4:12.145.132.176/29 ip4:12.29.86.48/29 include:spf.protection.outlook.com include:us._netblocks.mimecast.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; adkim=r; aspf=r; rf=afrf; pct=100; rua=mailto:[email protected]; fo=1; ri=604800
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:12.219.226.150/32 ip4:12.55.120.176/32 ip4:12.237.96.150/32 ip4:12.55.98.230/32 ip4:12.145.132.176/29 ip4:12.29.86.48/29 include:spf.protection.outlook.com include:us._netblocks.mimecast.com -all
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