Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
centrosur.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 19:43:53 UTC · ↺ Refresh
MX Hostnames
- centrosur-co.mail.protection.outlook.com
MX Priorities
- centrosur-co.mail.protection.outlook.com: 0
A / AAAA Records
- 173.230.138.26 ↩ 173-230-138-26.ip.linodeusercontent.com
Mail Server IPs
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
- 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ben.ns.cloudflare.com dns.cloudflare.com 2400459510 10000 2400 604800 1800
Primary NS (mname)
ben.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400459510
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
paige.ns.cloudflare.com
ben.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.sendinblue.com mx include:spf.mandrillapp.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
default._domainkey
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 237 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
6 records- mail._domainkey
- SPFv=spf1 include:spf.sendinblue.com mx include:spf.mandrillapp.com include:spf.protection.outlook.com ~all
- Sendinblue-code:707abba87756b4591e85b1998abd2664
- brevo-code:707abba87756b4591e85b1998abd2664
- ca3-fc65a8cddb974c109c5a21d0479a7b3b
- google-site-verification=2N7sxciYa8LVU3ROlW9TjYxTj9Skdxjzeholvci8BcY
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