Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
3m.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-27 06:14:55 UTC · ↺ Refresh
MX Hostnames
- mxb-00318502.gslb.pphosted.com
- mxa-00318502.gslb.pphosted.com
MX Priorities
- mxb-00318502.gslb.pphosted.com: 10
- mxa-00318502.gslb.pphosted.com: 10
A / AAAA Records
- 16.59.85.87 ↩ ec2-16-59-85-87.us-east-2.compute.amazonaws.com
- 3.139.118.180 ↩ ec2-3-139-118-180.us-east-2.compute.amazonaws.com
Mail Server IPs
- 66.159.241.189 ↩ mx0a-00318502.pphosted.com
SOA Record
Raw SOA
a.ns.3m.com dns.cloudflare.com 2399181214 10000 2400 604800 1800
Primary NS (mname)
a.ns.3m.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399181214
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
a.ns.3m.com
b.ns.3m.com
SPF Record
✓ Strict (-all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._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
6 records- google-site-verification=kZV1HQVTfYDnXRv2-lr9rWQ7w5pm8BDwR_oO66Jwu78
- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
- 6kv4dg79vvlcscja1ea9cp5ai
- facebook-domain-verification=k2inhxde42rbrf69avgc2g8ru1nkrz
- google-site-verification=5jizbRgBVEqWtN4gVpAF1c99lyi-jqtTzp4m6xDY160
- google-site-verification=O5R7rrbm6-bt5YN8S-Ct6E0i99zRbL-LQFd368n4QwQ
Full email verification for 3m.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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