childrenshospital.org

Valid Email Server
Domain Lookup › childrenshospital.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
childrenshospital.org
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 06:10:09 UTC · ↺ Refresh

MX Hostnames

  • mailsmtp4.childrenshospital.org
  • mailsmtp5.childrenshospital.org
  • mailsmtp2.childrenshospital.org
  • mailsmtp7.childrenshospital.org
  • mailsmtp6.childrenshospital.org
  • mailsmtp1.childrenshospital.org
  • mailsmtp3.childrenshospital.org

MX Priorities

  • mailsmtp4.childrenshospital.org: 5
  • mailsmtp3.childrenshospital.org: 5
  • mailsmtp6.childrenshospital.org: 5
  • mailsmtp2.childrenshospital.org: 5
  • mailsmtp1.childrenshospital.org: 5
  • mailsmtp7.childrenshospital.org: 5
  • mailsmtp5.childrenshospital.org: 5

A / AAAA Records

  • 45.60.73.21 (no PTR)
  • 45.60.109.21 (no PTR)

Mail Server IPs

  • 134.174.13.55 ↩ mailsmtp4.childrenshospital.org
  • 134.174.20.73 ↩ mailsmtp3.childrenshospital.org
  • 134.174.20.74 ↩ mailsmtp6.childrenshospital.org
  • 134.174.13.92 ↩ mailsmtp2.childrenshospital.org
  • 134.174.13.91 ↩ mailsmtp1.childrenshospital.org

SOA Record

Raw SOA ndcnetnse1.tch.harvard.edu isddnsadmins-dl.childrens.harvard.edu 710 21600 3600 2419200 60
Primary NS (mname)
ndcnetnse1.tch.harvard.edu
Admin Email (rname)
isddnsadmins-dl@childrens.harvard.edu
Serial
710
Refresh
21600s
Retry
3600s
Expire
2419200s
Minimum TTL
60s

Nameservers (NS)

ns2.childrenshospital.org
ns5.childrenshospital.org
ns1.childrenshospital.org
ndcnetnse1.tch.harvard.edu
bdcnetnse1.tch.harvard.edu

SPF Record

✓ Soft Fail (~all)
v=spf1 mx a ip4:134.174.13.91 ip4:134.174.13.92 ip4:134.174.20.73 ip4:134.174.20.74 ip4:134.174.13.18 ip4:134.174.20.21 ip4:134.174.13.55 ip4:134.174.13.56 ip4:134.174.20.50 include:mail.equifax.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

8 records
  • globalsign-domain-verification=48EAE1B27E43385AF4362F8F402CEC0F
  • jxz40q4r18gchght8p06rc7366sx5g52
  • globalsign-domain-verification=5B446986E552D761C0219044E1E70B46
  • google-site-verification=Geh13owdppbJ2kG_WYjzZHogJUEfuPBvqtXD_X6oXGc
  • google-site-verification=83HEQPfxofMwKoCdzDURaX8QTR-8-Pupth62OI29xX4
  • globalsign-domain-verification=FCEFCB6943D5E31DE0B4E71D8685AEB2
  • SPFv=spf1 mx a ip4:134.174.13.91 ip4:134.174.13.92 ip4:134.174.20.73 ip4:134.174.20.74 ip4:134.174.13.18 ip4:134.174.20.21 ip4:134.174.13.55 ip4:134.174.13.56 ip4:134.174.20.50 include:mail.equifax.com ~all
  • globalsign-domain-verification=8E9E8ACA967729DD0027E52F822F9CBF
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