Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
qualityairinc.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 20:35:47 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 162.243.160.162 ↩ serve.csusa.com
Mail Server IPs
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns1-05.azure-dns.com dnsadmin.comfortsystemsusa.com 205201428 86400 7200 1209600 7200
Primary NS (mname)
ns1-05.azure-dns.com
Admin Email (rname)
dnsadmin@comfortsystemsusa.com
Serial
205201428
Refresh
86400s
Retry
7200s
Expire
1209600s
Minimum TTL
7200s
Nameservers (NS)
ns4-05.azure-dns.info
ns1-05.azure-dns.com
ns2-05.azure-dns.net
ns3-05.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 mx:comfortsystemsusa-com.mail.protection.outlook.com ip4:72.32.72.85 ip4:162.242.134.119 ip4:72.32.72.83 ip4:72.32.72.84 include:spf_all.comfortsystemsusa.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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
7 records- _globalsign-domain-verification=An0jnSbf3-miSpYpEdSxOWLmRdJd8e7S4HZn2o444F
- openai-domain-verification=dv-SguIaBmFQ22m6DrYg7CZVdKr
- smartsheet-site-validation=gGHpcukgbvMIbJLKtPyRjAoeZlsSRwMj
- MS=ms22744171
- SPFv=spf1 mx:comfortsystemsusa-com.mail.protection.outlook.com ip4:72.32.72.85 ip4:162.242.134.119 ip4:72.32.72.83 ip4:72.32.72.84 include:spf_all.comfortsystemsusa.com -all
- 2GvjIUxFd7xA2cvG2qcGRvpsAfukyBmSZef20N2+ic563uHubNzeRlI+XF2GmyMipRgEee6DjsoKTCeH9rORUA==
- apple-domain-verification=TLTNaKMl3R5SKZOn
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
See demo & docs
Deep verification
Full email verification for qualityairinc.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits