Domain Overview
DNS: ✓ 20h ago
Checker: ✓ 20h ago
tncosmos.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-07-01 23:42:13 UTC · ↺ Refresh
MX Hostnames
- server2.tncosmos.com
MX Priorities
- server2.tncosmos.com: 0
A / AAAA Records
- 74.208.218.17 ↩ server2.tncosmos.com
Mail Server IPs
- 74.208.218.17 ↩ server2.tncosmos.com
SOA Record
Raw SOA
ns1098.ui-dns.de hostmaster.1und1.com 2017060192 28800 7200 604800 600
Primary NS (mname)
ns1098.ui-dns.de
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060192
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1098.ui-dns.de
ns1054.ui-dns.com
ns1109.ui-dns.biz
ns1065.ui-dns.org
SPF Record
✓ Strict (-all)
v=spf1 mx a:server2.tncosmos.com ip4:74.208.218.17 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
default._domainkey
mail._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
2 records- SPFv=spf1 mx a:server2.tncosmos.com ip4:74.208.218.17 -all
- google-site-verification=U9NtKQoOoop-ylTr6U8QMhai1iNca445H_0RwLdPU20
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