Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cityofknoxville.org
No
None
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 15:26:55 UTC · ↺ Refresh
MX Hostnames
No MX records found.
MX Priorities
No priority data.
A / AAAA Records
- 50.219.185.42 (no PTR)
Mail Server IPs
No IPs resolved.
SOA Record
Raw SOA
a8.uberns.com hostmaster.knoxvilletn.gov 2025031300 1200 600 1296000 3600
Primary NS (mname)
a8.uberns.com
Admin Email (rname)
hostmaster@knoxvilletn.gov
Serial
2025031300
Refresh
1200s
Retry
600s
Expire
1296000s
Minimum TTL
3600s
Nameservers (NS)
a8.uberns.com
b8.uberns.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;adkim=s;aspf-s fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject
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
4 records- jv749coir3onqn22an0up17akg
- SPFv=spf1 -all
- MS=ms66781822
- gu0483mrc7inubpj9918ohbe6g
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