lrcostanzo.com

Valid Email Server
Domain Lookup › lrcostanzo.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
lrcostanzo.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-28 12:42:57 UTC · ↺ Refresh

MX Hostnames

  • d154347a.ess.barracudanetworks.com

MX Priorities

  • d154347a.ess.barracudanetworks.com: 1

A / AAAA Records

  • 199.16.172.44 (no PTR)
  • 199.16.173.161 (no PTR)

Mail Server IPs

  • 209.222.82.252 ↩ mail.ess.barracuda.com
  • 209.222.82.253 ↩ mail.ess.barracuda.com
  • 209.222.82.255 ↩ mail.ess.barracuda.com

SOA Record

Raw SOA auth.roch.ny.frontiernet.net hostmaster.frontier.com 2407150003 10800 3600 604800 86400
Primary NS (mname)
auth.roch.ny.frontiernet.net
Admin Email (rname)
hostmaster@frontier.com
Serial
2407150003
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

auth.dlls.pa.frontiernet.net
auth.lkvl.mn.frontiernet.net
auth.roch.ny.frontiernet.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.ess.barracudanetworks.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

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

2 records
  • SPFv=spf1 include:spf.ess.barracudanetworks.com -all
  • MS=ms68400395
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