Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sestsenat.org.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 00:45:08 UTC · ↺ Refresh
MX Hostnames
- sestsenat-org-br.mail.protection.outlook.com
MX Priorities
- sestsenat-org-br.mail.protection.outlook.com: 0
A / AAAA Records
- 189.84.140.240 (no PTR)
Mail Server IPs
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 52.101.11.9 ↩ mail-sn1pr02cu00101.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-03.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-03.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-03.azure-dns.info
ns1-03.azure-dns.com
ns2-03.azure-dns.net
ns3-03.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:189.84.140.199 ip4:189.84.140.194 ip4:189.84.140.219 ip4:187.72.30.59 ip4:107.174.231.13 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=80; sp=quarantine; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
⚠ Policy applies to 80% of failing messages only
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- msfpkey=zybc2eskjhfukft38n2x1jeo
- google-site-verification=L8etJJBSelPlV0XmgllzP5jeKqkiernoT4S5q5sMcRM
- apple-domain-verification=uvjRsPYu3HybXbdu
- SPFv=spf1 mx ip4:189.84.140.199 ip4:189.84.140.194 ip4:189.84.140.219 ip4:187.72.30.59 ip4:107.174.231.13 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net -all
- MS=ms57698164
- MS=ms27801620
- MxLHNzDv8QXjWLE6KwTPI+kJEYD1zVUENiu4NTE/0ypaRG3lAfpDYVUKP9u0Hnf832BElQuJHxD6BkgD1jw8Zg==
- google-site-verification=ppU8621eoN4McQXVmHBCb3pZMj26iO-kdRRWHE5iKQk
- google-site-verification=_wGscryFrUU3jlTxH9js1_4yPZVo-ry5Ep5pt8lv-eA
- d365mktkey=o5XlVHFjc4RK2lOTwKIKbr2xfGA6iLZBTFuVxtQPJw0x
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for sestsenat.org.br
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits