Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
m8r.co
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-14 04:28:36 UTC · ↺ Refresh
MX Hostnames
- mail2.m8r.co
- mail.m8r.co
MX Priorities
- mail2.m8r.co: 10
- mail.m8r.co: 10
A / AAAA Records
- 66.228.43.70 ↩ 66-228-43-70.ip.linodeusercontent.com
- 2600:3c03::f03c:91ff:fe19:92cd (no PTR)
Mail Server IPs
- 45.33.83.75 ↩ li1029-75.members.linode.com
- 139.144.239.131 ↩ 139-144-239-131.ip.linodeusercontent.com
SOA Record
Raw SOA
ns1.linode.com support.manybrain.com 2021000002 14400 14400 1209600 86400
Primary NS (mname)
ns1.linode.com
Admin Email (rname)
support@manybrain.com
Serial
2021000002
Refresh
14400s
Retry
14400s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns2.linode.com
ns5.linode.com
ns4.linode.com
ns1.linode.com
ns3.linode.com
SPF Record
✗ Invalid
v=spf1 -all
📊 DNS lookups: 0/10
⚠ Strict -all with no allowed senders — no servers can send email for this domain.
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;aspf=s;pct=100;rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 -all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for m8r.co
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits