Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
estratos.net
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-03 00:35:34 UTC · ↺ Refresh
MX Hostnames
- mail.estratos.net
MX Priorities
- mail.estratos.net: 0
A / AAAA Records
- 172.233.178.236 ↩ s23.estratos.top
Mail Server IPs
- 172.233.178.236 ↩ s23.estratos.top
SOA Record
Raw SOA
ns1.linode.com webmaster.estratos.net 2021000050 3600 3600 1209600 3600
Primary NS (mname)
ns1.linode.com
Admin Email (rname)
webmaster@estratos.net
Serial
2021000050
Refresh
3600s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns5.linode.com
ns4.linode.com
ns1.linode.com
ns3.linode.com
ns2.linode.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:172.233.178.236 -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
✓ 1 found
mail._domainkey
✓ Public key: 392 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 a mx ip4:172.233.178.236 -all
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