Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
holstonmedicalgroup.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 14:32:48 UTC · ↺ Refresh
MX Hostnames
- mxb-0077b904.gslb.pphosted.com
- mxa-0077b904.gslb.pphosted.com
MX Priorities
- mxb-0077b904.gslb.pphosted.com: 5
- mxa-0077b904.gslb.pphosted.com: 5
A / AAAA Records
- 149.111.148.141 ↩ prohc-elr.optum.com
Mail Server IPs
- 148.163.150.77 ↩ mx0a-0077b904.pphosted.com
SOA Record
Raw SOA
ns1.p201.dns.oraclecloud.net hostmaster.holstonmedicalgroup.com 57 3600 600 604800 1800
Primary NS (mname)
ns1.p201.dns.oraclecloud.net
Admin Email (rname)
hostmaster@holstonmedicalgroup.com
Serial
57
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns1.p201.dns.oraclecloud.net
ns2.p201.dns.oraclecloud.net
ns4.p201.dns.oraclecloud.net
ns3.p201.dns.oraclecloud.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:96.33.120.200/32 ip4:74.122.75.132/32 include:_spfae.corpmailsvcs.com include:spf.protection.outlook.com include:_spf.ultipro.com include:spf-00978401.pphosted.com include:_spf.psm.knowbe4.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 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
8 records- apple-domain-verification=qMxP3R1C2LxzmoPo
- knowbe4-site-verification=29be8c3afd9d170d52b54b0430592e44
- have-i-been-pwned-verification=dweb_0v36e17kdkrzytd15uy2d4py
- duo_sso_verification=p98vUTTKDXzgZIl2JUIqVeA0nl5Al3uTIz3N6bKQPeFKAI8L0oB8Eg6CmqJ7WTHI
- duo_sso_verification=cJaOT9yRZW9tSFRLXyINZnwqxBiMAIYsnZQN5vECN0DwiCz2gFSlDJcbNeSQivO3
- SPFv=spf1 ip4:96.33.120.200/32 ip4:74.122.75.132/32 include:_spfae.corpmailsvcs.com include:spf.protection.outlook.com include:_spf.ultipro.com include:spf-00978401.pphosted.com include:_spf.psm.knowbe4.com -all
- Pinterest-site-verification=0573a7cac111de4f70084261f8523538
- cisco-ci-domain-verification=110b8874fd1a653d4182a169a337c356c65ebaece32e3458d277c189db526e5c
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