Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
delcolibraries.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 01:04:38 UTC · ↺ Refresh
MX Hostnames
- delcolibraries-org.mail.protection.outlook.com
MX Priorities
- delcolibraries-org.mail.protection.outlook.com: 0
A / AAAA Records
- 44.225.190.210 ↩ ec2-44-225-190-210.us-west-2.compute.amazonaws.com
Mail Server IPs
- 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
dns3.dciu.net hostmaster.dciu.net 2006103244 900 600 86400 3600
Primary NS (mname)
dns3.dciu.net
Admin Email (rname)
hostmaster@dciu.net
Serial
2006103244
Refresh
900s
Retry
600s
Expire
86400s
Minimum TTL
3600s
Nameservers (NS)
dns2.dciu.net
dns4.dciu.net
dns3.dciu.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:sendersrv.com include:charlotte.delco.lib.pa.us include:delco.iii.com include:amazonses.com ip4:216.17.113.21 ip4:204.13.204.40 -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
4 records- 140n30t5w95cljq5qv35cn384wshl0sp
- MS=A8B4685BF3EBB2D00148294C6177738F81FAFB18tyn2ddky7bfjwx66yb7x4vd0wprpvxtn
- SPFv=spf1 include:spf.protection.outlook.com include:sendersrv.com include:charlotte.delco.lib.pa.us include:delco.iii.com include:amazonses.com ip4:216.17.113.21 ip4:204.13.204.40 -all
- 6ypdsqn85zffkbzcrv04wzn36l044csd
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