Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
letsimprove.io
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 12:36:34 UTC · ↺ Refresh
MX Hostnames
- letsimprove-io.mail.protection.outlook.com
MX Priorities
- letsimprove-io.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.194.99 (no PTR)
- 104.21.20.202 (no PTR)
- 2606:4700:3033::6815:14ca
- 2606:4700:3037::ac43:c263
Mail Server IPs
- 52.101.198.0 ↩ mail-cp5p284cu01800.inbound.protection.outlook.com
- 52.101.198.1 ↩ mail-cp4p284cu00401.inbound.protection.outlook.com
- 52.101.200.0 ↩ mail-roap284cu02600.inbound.protection.outlook.com
- 52.101.198.38 ↩ mail-cp3p284cu00706.inbound.protection.outlook.com
- 2a01:111:f403:c94c:: ↩ mail-roap284cu02600.inbound.protection.outlook.com
- 2a01:111:f403:c94a:: ↩ mail-cp5p284cu01800.inbound.protection.outlook.com
- 2a01:111:f403:c94a::1 ↩ mail-cp4p284cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c94a::2 ↩ mail-cp3p284cu00702.inbound.protection.outlook.com
SOA Record
Raw SOA
mary.ns.cloudflare.com dns.cloudflare.com 2396921261 10000 2400 604800 1800
Primary NS (mname)
mary.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396921261
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
rocky.ns.cloudflare.com
mary.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:138.117.218.10 include:spf.ravena.servidor.net.br include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
default._domainkey
s1._domainkey
s2._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 ip4:138.117.218.10 include:spf.ravena.servidor.net.br include:spf.protection.outlook.com -all
- SPFv=spf1 +ip4:138.117.218.10 +include:spf.ravena.servidor.net.br +include:amazonses.com +include:sendgrid.net ~all
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