Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
columbuslibrary.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 23:16:48 UTC · ↺ Refresh
MX Hostnames
- columbuslibrary-org.mail.eo.outlook.com
MX Priorities
- columbuslibrary-org.mail.eo.outlook.com: 5
A / AAAA Records
- 52.85.31.71 ↩ server-52-85-31-71.jfk50.r.cloudfront.net
- 52.85.31.55 ↩ server-52-85-31-55.jfk50.r.cloudfront.net
- 52.85.31.29
- 52.85.31.64
Mail Server IPs
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
SOA Record
Raw SOA
ns-1681.awsdns-18.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1681.awsdns-18.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1327.awsdns-37.org
ns-1681.awsdns-18.co.uk
ns-290.awsdns-36.com
ns-619.awsdns-13.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:66.213.29.74 ip4:209.143.68.78 include:spf.protection.outlook.com include:amazonses.com include:_spf.mailgun.org include:spf.mailjet.com include:spf.mandrillapp.com include:outboundmail.blackbaud.net -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=0:1:d:s;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
17 records- d4a1rtcmrvd4rbg4bm5ivlcnkm
- google-site-verification=MgGhwcqpvuegKCRvQFrsUEskENkdhw7Kv4ViG1dg_yo
- mr8blctffdtpfocmdrsl93a28m
- 6m4r7q668p122p1ur1npsbltm8
- 88aa2332-241b-4153-a367-ba50fe575ac8
- cuermaq7487o6phe8hoqbslat4
- miro-verification=7070688f33baf5947ff420ea1063e5860be796b6
- SPFv=spf1 ip4:66.213.29.74 ip4:209.143.68.78 include:spf.protection.outlook.com include:amazonses.com include:_spf.mailgun.org include:spf.mailjet.com include:spf.mandrillapp.com include:outboundmail.blackbaud.net -all
- jamf-site-verification=Z9F8taVxZ5SRisr8i8jdrQ
- smartsheet-site-validation=iJRBpauNnzmphLKqa4euUGH9DD-XGBEQ
- apple-domain-verification=gQrNl5HikcKDCtfQ
- fb7868eb315a6d43ce5fecf7d2a3eb1905720efa4b9ebcb882
- google-site-verification=pZk7PL3ToM0-EcHGh1Qazr8Dg8PEAWgB_qUgpnbH40o
- google-site-verification=NMbZ5-OJcuE3NOguEFtxBTWQm0mGvciv8Xu_4lbpt6w
- ud372826ekbd39u2n7cjoqj4q9
- ms-domain-verification=2bcdb898-efc8-430d-804c-21b10f183306
- apple-domain-verification=mwKS5TvV0HeDq5Gk
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