Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cds.ed.cr
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-24 00:09:00 UTC · ↺ Refresh
MX Hostnames
- cds-ed-cr.mail.protection.outlook.com
MX Priorities
- cds-ed-cr.mail.protection.outlook.com: 0
A / AAAA Records
- 20.198.145.242 (no PTR)
Mail Server IPs
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.crservers.net hostmaster.cds.ed.cr 2025032000 7200 300 1209600 10800
Primary NS (mname)
ns1.crservers.net
Admin Email (rname)
hostmaster@cds.ed.cr
Serial
2025032000
Refresh
7200s
Retry
300s
Expire
1209600s
Minimum TTL
10800s
Nameservers (NS)
ns2.crservers.net
ns3.crservers.net
ns1.crservers.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=none;pct=0;ri=0;rua=mailto:[email protected];ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
⚠ Policy applies to 0% of failing messages only
DKIM Selectors
✓ 4 found
google._domainkey
default._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- 7UY-K9P-DM3
- ZOOM_verify_o7S2fDtmST2XH5_JtzHeaA
- apple-domain-verification=2Y9v4CJpaCSVsKFz
- cisco-ci-domain-verification=45120f84593b7d1f00260047670c8bd80b35fb127352f74de654c4dc1bff3724
- SPFv=spf1 include:_spf.google.com include:spf.protection.outlook.com ~all
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