Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
yakermd.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 23:44:13 UTC · ↺ Refresh
MX Hostnames
- mx1-us.emailsecurity.app
- mx2-us.emailsecurity.app
MX Priorities
- mx1-us.emailsecurity.app: 10
- mx2-us.emailsecurity.app: 10
A / AAAA Records
- 172.67.153.225 (no PTR)
- 104.21.58.12 (no PTR)
- 2606:4700:3033::6815:3a0c (no PTR)
- 2606:4700:3033::ac43:99e1 (no PTR)
Mail Server IPs
- 40.121.188.167 ↩ mx1-us.emailsecurity.app
- 172.212.4.33 ↩ mx1-us.emailsecurity.app
SOA Record
Raw SOA
isabel.ns.cloudflare.com dns.cloudflare.com 2396421699 10000 2400 604800 1800
Primary NS (mname)
isabel.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396421699
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
osmar.ns.cloudflare.com
isabel.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:35.209.9.225 include:spf.protection.outlook.com include:one.zoho.com -all
📊 DNS lookups: 2/10
✓ 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
3 records- SPFv=spf1 ip4:35.209.9.225 include:spf.protection.outlook.com include:one.zoho.com -all
- google-site-verification=7BZH26G3p3Qp1LFpfeidgKGRwse3jMQ5pOpE3dCuy-M
- google-site-verification=nR1Kq2TbbiAykj9N0CukHwZXlywJjN8FFMLjaEJJ12Y
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