Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
michaelcosburn.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 00:06:04 UTC · ↺ Refresh
MX Hostnames
- mx2.ubertor.com
MX Priorities
- mx2.ubertor.com: 100
A / AAAA Records
- 54.85.21.172 ↩ ec2-54-85-21-172.compute-1.amazonaws.com
Mail Server IPs
- 54.84.108.67 ↩ mx2.ubertor.com
SOA Record
Raw SOA
ns1.ubertor.com dns.ubertor.com 2025121519 10800 3600 604800 3600
Primary NS (mname)
ns1.ubertor.com
Admin Email (rname)
dns@ubertor.com
Serial
2025121519
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.ubertor.com
ns1.ubertor.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a:mx2.ubertor.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- DKIMv=DKIM1; g=*; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDOMYnGSNUWvm3IlcONUSeNc9e3AliM4r5gRql9OhqOu4gqs+mU3EduBuPocX6NYc5+dOEzQPm5NyMWPkYS+JwL2+UlDXA3FYrn+/gjon7BuTgeYJm8b4ArgmmUKgexu/2Vdp+xUvbaSUdqwfIa9VtdQrXsXhYppF2F0FDphZVFOwIDAQAB
- SPFv=spf1 mx a:mx2.ubertor.net ~all
Full email verification for michaelcosburn.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits