Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
columbus.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 13:06:32 UTC · ↺ Refresh
MX Hostnames
- columbus-org.mail.protection.outlook.com
MX Priorities
- columbus-org.mail.protection.outlook.com: 10
A / AAAA Records
- 151.101.194.159 (no PTR)
Mail Server IPs
- 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
- 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
ns85.worldnic.com namehost.worldnic.com 126021816 10800 3600 604800 3600
Primary NS (mname)
ns85.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126021816
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns85.worldnic.com
ns86.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:sendgrid.net include:spf.myconnectwise.net mx a include:spf.protection.outlook.com include:relay1.weblinkinternational.com include:spf.constantcontact.com ip4:4.30.104.98 ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
5 records- linkedin-site-verification=dc8428a4-7307-43ea-a2f8-d448735003a7
- canva-site-verification=Wq8GM6ReGwjbyTWbQLuiuQ
- SPFv=spf1 include:sendgrid.net include:spf.myconnectwise.net mx a include:spf.protection.outlook.com include:relay1.weblinkinternational.com include:spf.constantcontact.com ip4:4.30.104.98 ~all
- google-site-verification=VxzGk3gX8Bl1-Qywh_8B6w1R_OmuAc8lpAqorC_ZSOk
- D835466799
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