Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
comfortsystemsusa.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 07:36:19 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 162.243.160.162 ↩ serve.csusa.com
Mail Server IPs
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns1-07.azure-dns.com dnsadmin.comfortsystemsusa.com 205201676 3600 600 1209600 3600
Primary NS (mname)
ns1-07.azure-dns.com
Admin Email (rname)
dnsadmin@comfortsystemsusa.com
Serial
205201676
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns2-07.azure-dns.net
ns3-07.azure-dns.org
ns4-07.azure-dns.info
ns1-07.azure-dns.com
SPF Record
✓ Strict (-all)
v=spf1 mx:comfortsystemsusa-com.mail.protection.outlook.com ip4:72.32.72.85 ip4:148.62.78.252 ip4:162.242.134.119 ip4:52.4.68.122 ip4:34.225.161.88 ip4:54.146.16.143 ip4:128.136.98.40 ip4:128.136.98.36 ip4:54.70.98.207 ip4:162.243.160.162 include:_spf.createsend.com include:spf2.comfortsystemsusa.com include:spf_all.comfortsystemsusa.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 3 found
k1._domainkey
s1._domainkey
s2._domainkey
⚠ Public key (p=) missing in DKIM record for selector k1.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
23 records- nf3b2gvd6dq01rosjqijnjor9n
- atlassian-domain-verification=3CG5fPM4Hf0BvsHxT/O5JRBX2d4aDCxwJNHJw4S5eaBVL37+ZzeWtcazFhnhnLZt
- gsqkk32falbtu5q770jpv22dp0
- SPFv=spf1 mx:comfortsystemsusa-com.mail.protection.outlook.com ip4:72.32.72.85 ip4:148.62.78.252 ip4:162.242.134.119 ip4:52.4.68.122 ip4:34.225.161.88 ip4:54.146.16.143 ip4:128.136.98.40 ip4:128.136.98.36 ip4:54.70.98.207 ip4:162.243.160.162 include:_spf.createsend.com include:spf2.comfortsystemsusa.com include:spf_all.comfortsystemsusa.com -all
- 9nvkkbs4c25r4r7eshu5d9l2vu
- dnds9532c4q59rsd8bh78r938o
- g9ajso5b80fad4r0073vlcu7gf
- zLxLTUMgskBPutFXqnK/MFsUQD2mmJ6Qis+JMKMC7v+j883dc61CSAl2SdvKlGtg4kuVPJczSjplv/Y13SEGbw==
- apple-domain-verification=a1NEJkVcvENtbayi
- h6jmk3igm5u9uth9mj5172beka
- YXp1cmVfY29tbW9u
- k86drbqvbb0cblnec0gsbnr6rt
- j3j8ul0qgh6l9d3h5kfomu7rj2
- 5m43sdvcaujtei4vp4hkaho4rq
- google-site-verification=GW7ioe7NVFrAkXGam76l3i_D7lPF79sSWMPRrI_RoFA
- 47cfpjoa7pmhp6acsp5c0sd9fl
- smartsheet-site-validation=6diMRcR-v93MQoTaNbRzqYzI5Xj6Fslo
- MS=ms53967080
- autodesk-domain-verification=c9szrLnzYyFhO1LiCpFM
- tbbp49ts8d62jo0je4sunu2v19
- tg1hp2covog8joirtpb0nl871c
- openai-domain-verification=dv-vJTJrbRJ3PLkH8Z2oFe4Dwgq
- box-domain-verification=b85b627ee4d7aeddb524471eea476ae071fdee015deb1d90f2828567b0b2a518
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