armstrongservice.com

Valid Email Server
Domain Lookup › armstrongservice.com

Domain Overview

DNS: ✓ 14d ago Checker: ✓ 14d ago
armstrongservice.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-07-17 23:01:15 UTC · ↺ Refresh

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MX Hostnames

  • us-smtp-inbound-2.mimecast.com
  • us-smtp-inbound-1.mimecast.com

MX Priorities

  • us-smtp-inbound-1.mimecast.com: 100
  • us-smtp-inbound-2.mimecast.com: 100

A / AAAA Records

  • 141.193.213.20 (no PTR)
  • 141.193.213.21 (no PTR)

Mail Server IPs

  • 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com

SOA Record

Raw SOA pdns01.domaincontrol.com dns.jomax.net 2026031000 28800 7200 604800 3600
Primary NS (mname)
pdns01.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026031000
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

pdns02.domaincontrol.com
pdns01.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ip4:207.126.144.0/20 ip4:64.18.0.0/20 ip4:50.124.28.0/24 a:dispatch-us.ppehosted.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;sp=none;pct=100;rua=mailto:[email protected];ri=86400;aspf=s;adkim=s;fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

6 records
  • sk7kqrDEZn5RGDl88AqojRwhPrXe/gixYKMl+fZeJe2QSw3e8uF76Bjm75FeJt0poq+1/Q85cFziymYYnN+65w==
  • \009google-site-verification=QaV6E6WU4GHsVztCsjuWcfw3nfnU-utMpLGzNvAeoKQ
  • MS=ms35047281
  • SPFv=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ip4:207.126.144.0/20 ip4:64.18.0.0/20 ip4:50.124.28.0/24 a:dispatch-us.ppehosted.com -all
  • A165jnOchYMG/RoVcPARK2glyXuP5vPNiaEBrQByKeUlg2SHNZ5Sb29GaPBBAX8LWOewVGMzdsyITlRtt1Q0uw==
  • 0ed1fe018a4abfaa8a48694b1b98889f42361e4187
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