steel.org

Valid Email Server
Domain Lookup › steel.org
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
steel.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-06-03 07:47:04 UTC · ↺ Refresh

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MX Hostnames

  • us-smtp-inbound-1.mimecast.com
  • us-smtp-inbound-2.mimecast.com

MX Priorities

  • us-smtp-inbound-2.mimecast.com: 10
  • us-smtp-inbound-1.mimecast.com: 10

A / AAAA Records

  • 141.193.213.10 (no PTR)
  • 141.193.213.11 (no PTR)

Mail Server IPs

  • 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com

SOA Record

Raw SOA ns25.worldnic.com namehost.worldnic.com 126031716 10800 3600 604800 3600
Primary NS (mname)
ns25.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126031716
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns25.worldnic.com
ns26.worldnic.com

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:38.101.186.224 ip4:199.119.115.34 ip4:204.178.115.186 ip4:69.63.140.91 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:spf.ymem.net include:servers.mcsv.net ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 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

10 records
  • MS=ms66258013
  • v95k0tgj8tn9s9arp6g74qke1h
  • facebook-domain-verification=nq06y77xl6ig61x4bt2xtmhv6z4285
  • 51kbqd0dto7ppge0oosnp190rv.
  • 51kbqd0dto7ppge0oosnp190rv
  • linkedin-site-verification=c9869736-6c62-4622-8ffb-b182e8c18ad7
  • 726JOME3M81NJDJ90NESUQS5RR
  • SPFv=spf1 ip4:38.101.186.224 ip4:199.119.115.34 ip4:204.178.115.186 ip4:69.63.140.91 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:spf.ymem.net include:servers.mcsv.net ~all
  • TAY23+/fUcRgyF+TzrwLKxw3s/53+Vw892htXun8VUKlQDXXVXQ3rVU/tsb7Wezk44qEWldKJYmWGQcD6fZwQw==
  • dpl8j66ddamd7dt0a80r559fdp
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