Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
smithsonian.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 03:11:31 UTC · ↺ Refresh
MX Hostnames
- smithsonian-org.mail.protection.outlook.com
MX Priorities
- smithsonian-org.mail.protection.outlook.com: 0
A / AAAA Records
- 160.111.244.22 ↩ www.contributingmembership.com
Mail Server IPs
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
a26-66.akam.net ocio-noc.si.edu 745142027 1200 180 1209600 1800
Primary NS (mname)
a26-66.akam.net
Admin Email (rname)
ocio-noc@si.edu
Serial
745142027
Refresh
1200s
Retry
180s
Expire
1209600s
Minimum TTL
1800s
Nameservers (NS)
a26-66.akam.net
a24-67.akam.net
a28-65.akam.net
a11-67.akam.net
a1-88.akam.net
a9-64.akam.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:160.111.0.0/16 include:spf.protection.outlook.com include:spf.ticketure.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=r; aspf=r; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
2 records- MS=ms76417896
- SPFv=spf1 ip4:160.111.0.0/16 include:spf.protection.outlook.com include:spf.ticketure.com -all
Full email verification for smithsonian.org
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