firstline.com.au

Valid Email Server
Domain Lookup › firstline.com.au

Domain Overview

DNS: ✓ 5h ago Checker: ✓ 5h ago
firstline.com.au
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-07-02 13:09:23 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • mail.firstline.com.au

MX Priorities

  • mail.firstline.com.au: 0

A / AAAA Records

  • 54.66.169.160 ↩ handel.firstline.net.au

Mail Server IPs

  • 85.187.128.49 ↩ sg1-ts7.a2hosting.com

SOA Record

Raw SOA ns1.a2hosting.com root.sg1-ts7.a2hosting.com 2026070202 3600 1800 1209600 86400
Primary NS (mname)
ns1.a2hosting.com
Admin Email (rname)
root@sg1-ts7.a2hosting.com
Serial
2026070202
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns2.a2hosting.com
ns4.a2hosting.com
ns1.a2hosting.com
ns3.a2hosting.com

SPF Record

✓ Strict (-all)
v=spf1 +a +mx include:spf.a2hosting.com include:amazonses.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; pct=100; fo=1; \010rua=mailto:[email protected],mailto:[email protected];\010ruf=mailto:[email protected],mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject

DKIM Selectors

✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default

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

All TXT Records

2 records
  • SPFv=spf1 +a +mx include:spf.a2hosting.com include:amazonses.com -all
  • google-site-verification=a64ZK2BVuG6o73GRZnUwABQTTmFP_lw2Qw4WdGNKvGY
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for firstline.com.au

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits