Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
harperengineering.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 12:21:48 UTC · ↺ Refresh
MX Hostnames
- harperengineering-com.mail.eo.outlook.com
MX Priorities
- harperengineering-com.mail.eo.outlook.com: 0
A / AAAA Records
- 76.76.21.21 (no PTR)
Mail Server IPs
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
nataly.ns.cloudflare.com dns.cloudflare.com 2399344830 10000 2400 604800 1800
Primary NS (mname)
nataly.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399344830
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
syeef.ns.cloudflare.com
nataly.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:us._netblocks.mimecast.com ip4:216.151.1.239 a:harperengineering.com ip4:64.122.5.100/30 ip4:162.17.166.246/29 ip4:67.51.98.202 ip4:65.140.139.218 ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; sp=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- atlassian-domain-verification=JWjwmX5VNAgUsmXgOeOoz/D/Ct9BjH3O9Lz1SrvuZ6b9i/oz5VsuwsuiTl8tDLgh
- google-site-verification=Xy24p4BBEHAV1TXc9gkMHEhZIS9H5ccGjECjvlz97uk
- google-site-verification=aYhv-IRiR_1qZ8KDQAxEh-dz45a4wmbRxhptwz450xU
- SPFv=spf1 include:spf.protection.outlook.com include:us._netblocks.mimecast.com ip4:216.151.1.239 a:harperengineering.com ip4:64.122.5.100/30 ip4:162.17.166.246/29 ip4:67.51.98.202 ip4:65.140.139.218 ~all
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