Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
karsten.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 15:29:57 UTC · ↺ Refresh
MX Hostnames
- karsten-com-br.mail.protection.outlook.com
- vsm268.vertip.net
- vsm268b.vertip.net
MX Priorities
- vsm268.vertip.net: 0
- karsten-com-br.mail.protection.outlook.com: 10
- vsm268b.vertip.net: 5
A / AAAA Records
- 18.229.58.159 ↩ ec2-18-229-58-159.sa-east-1.compute.amazonaws.com
Mail Server IPs
- 142.44.247.248 ↩ sm268.vertip.net
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 52.101.11.9 ↩ mail-sn1pr02cu00101.inbound.protection.outlook.com
- 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1495.awsdns-58.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1495.awsdns-58.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1606.awsdns-08.co.uk
ns-602.awsdns-11.net
ns-64.awsdns-08.com
ns-1495.awsdns-58.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:177.200.192.32/28 ip4:201.90.31.144/28 include:spf.protection.outlook.com include:spf1.neoassist.com include:spf1.auinmeio.com.br include:spf2.auinmeio.com.br ip4:142.44.247.248 ip4:167.114.96.247 include:amazonses.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
mail._domainkey
k1._domainkey
✓ Public key: 216 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
2 records- SPFv=spf1 ip4:177.200.192.32/28 ip4:201.90.31.144/28 include:spf.protection.outlook.com include:spf1.neoassist.com include:spf1.auinmeio.com.br include:spf2.auinmeio.com.br ip4:142.44.247.248 ip4:167.114.96.247 include:amazonses.com -all
- 3339TWI01BXSBJRB7IL8OW7D37TRXIDFZLB60YOK
Full email verification for karsten.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits