Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bouldermac.com
Disposable
✓ Yes
Unknown
⚠ Yes
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 02:04:15 UTC · ↺ Refresh
MX Hostnames
- mail.genmacos.com
MX Priorities
- mail.genmacos.com: 10
A / AAAA Records
- 143.198.4.139 (no PTR)
Mail Server IPs
- 144.126.136.177 ↩ vmi2602784.contaboserver.net
SOA Record
Raw SOA
dns1.registrar-servers.com hostmaster.registrar-servers.com 1769977791 43200 3600 604800 3601
Primary NS (mname)
dns1.registrar-servers.com
Admin Email (rname)
hostmaster@registrar-servers.com
Serial
1769977791
Refresh
43200s
Retry
3600s
Expire
604800s
Minimum TTL
3601s
Nameservers (NS)
dns1.registrar-servers.com
dns2.registrar-servers.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:173.212.250.97 ip4:143.198.4.139 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a mx ip4:173.212.250.97 ip4:143.198.4.139 ~all
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