Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mcmaster.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 10:22:11 UTC · ↺ Refresh
MX Hostnames
- mx0a-00570c01.pphosted.com
- mx0b-00570c01.pphosted.com
MX Priorities
- mx0b-00570c01.pphosted.com: 0
- mx0a-00570c01.pphosted.com: 0
A / AAAA Records
- 209.64.25.149 (no PTR)
Mail Server IPs
- 205.220.178.57 ↩ mx0b-00570c01.pphosted.com
- 205.220.166.57 ↩ mx0a-00570c01.pphosted.com
SOA Record
Raw SOA
ns2.mcmaster.com hostmaster.mcmaster.com 1684 900 900 86400 60
Primary NS (mname)
ns2.mcmaster.com
Admin Email (rname)
hostmaster@mcmaster.com
Serial
1684
Refresh
900s
Retry
900s
Expire
86400s
Minimum TTL
60s
Nameservers (NS)
ns3.mcmaster.com
ns2.mcmaster.com
ns1.mcmaster.com
ns4.mcmaster.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:209.64.25.245 ip4:209.64.25.246 ip4:209.64.25.247 ip4:209.64.25.248 ip4:12.203.197.22 ip4:12.203.197.23 ip4:12.203.197.24 ip4:12.203.197.25 ip4:44.203.112.2 include:_s00913664.autospf.email -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; sp=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; ri=86400
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 1 found
s1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
12 records- MS=ms15831590
- notion-domain-verification=hk4fClpkyNxaDpYRpNMju4LWhDtHC9IfPqji2fvE7LU
- MS=E150D2B549DCBD0EB9D652EE4B78C88D8E94B1F0
- apple-domain-verification=TTiWjZN11fZHZBQi
- twilio-domain-verification=e479f5ca90dfdbf8f06152e28adbb4f8
- _00e3btp7pnzoy6pqegfm7fsjjp0x9uw
- _kxi5f2699317hnmzrd20oc6kknc7myl
- docusign=e7d2700e-0abc-46de-9ae4-ec25ed45fdb7
- SPFv=spf1 ip4:209.64.25.245 ip4:209.64.25.246 ip4:209.64.25.247 ip4:209.64.25.248 ip4:12.203.197.22 ip4:12.203.197.23 ip4:12.203.197.24 ip4:12.203.197.25 ip4:44.203.112.2 include:_s00913664.autospf.email -all
- atlassian-domain-verification=GNSv9wabNT5xNCz0qSb/2LU6iZpUAc1Za56wsU1hJhgLeSTuIVYcajabmy9s1Bbf
- google-site-verification=yEN1-3qH9KxX3WSAoE2HiMMy4H9TTJoMcGUY8i7hEpI
- miro-verification=f4e0eeb30859fc7ba1f97fa4226ca3e283c9c863
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