Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
oppenheimer.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 01:17:42 UTC · ↺ Refresh
MX Hostnames
- mxb-00407301.gslb.pphosted.com
- mxa-00407301.gslb.pphosted.com
MX Priorities
- mxa-00407301.gslb.pphosted.com: 10
- mxb-00407301.gslb.pphosted.com: 10
A / AAAA Records
- 162.159.140.121 (no PTR)
- 172.66.0.119 (no PTR)
- 2a06:98c1:58::77 (no PTR)
- 2606:4700:7::77 (no PTR)
Mail Server IPs
- 66.159.240.219 ↩ mx0a-00407301.pphosted.com
- 66.159.238.192 ↩ mx0b-00407301.pphosted.com
SOA Record
Raw SOA
ns-4.opco.com please_set_email.absolutely.nowhere 75 10800 3600 2419200 900
Primary NS (mname)
ns-4.opco.com
Admin Email (rname)
please_set_email@absolutely.nowhere
Serial
75
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
ns-5.opco.com
ns-4.opco.com
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.messagelabs.com ip4:209.127.49.158 ip4:209.127.49.159 ip4:209.127.49.166 ip4:209.127.49.167 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 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
2 records- MS=ms57213345
- SPFv=spf1 mx include:spf.messagelabs.com ip4:209.127.49.158 ip4:209.127.49.159 ip4:209.127.49.166 ip4:209.127.49.167 -all
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