firstenvironmental.com

Valid Email Server
Domain Lookup › firstenvironmental.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
firstenvironmental.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 09:04:35 UTC · ↺ Refresh

MX Hostnames

  • firstenvironmental-com.mail.protection.outlook.com

MX Priorities

  • firstenvironmental-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 35.172.94.1 ↩ staticip.multiscreensite.com
  • 100.24.208.97 ↩ staticip2.multiscreensite.com

Mail Server IPs

  • 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
  • 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
  • 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
  • 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
  • 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA ns-us.1and1-dns.com hostmaster.1and1.com 2017072033 28800 7200 604800 300
Primary NS (mname)
ns-us.1and1-dns.com
Admin Email (rname)
hostmaster@1and1.com
Serial
2017072033
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns-us.1and1-dns.us
ns-us.1and1-dns.com
ns-us.1and1-dns.org
ns-us.1and1-dns.de

SPF Record

✓ Strict (-all)
v=spf1 mx a ip4:204.9.77.40/32 include:spf.protection.outlook.com a:mail.invaluement.com include:mailgun.org -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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

3 records
  • SPFv=spf1 mx a ip4:204.9.77.40/32 include:spf.protection.outlook.com a:mail.invaluement.com include:mailgun.org -all
  • 00D5Y000001d2RE=1TBQj000000028H
  • MS=ms53455928
Full email verification for firstenvironmental.com

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits