sigmacg.com

Valid Email Server
Domain Lookup › sigmacg.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sigmacg.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-19 23:14:59 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • us-smtp-inbound-1.mimecast.com: 10
  • us-smtp-inbound-2.mimecast.com: 10

A / AAAA Records

  • 74.208.236.245 ↩ 74-208-236-245.elastic-ssl.ui-r.com
  • 2607:f1c0:100f:f000::200 ↩ 2607-f1c0-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com

Mail Server IPs

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

SOA Record

Raw SOA ns1071.ui-dns.org hostmaster.1and1.com 2017121027 28800 7200 604800 300
Primary NS (mname)
ns1071.ui-dns.org
Admin Email (rname)
hostmaster@1and1.com
Serial
2017121027
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1097.ui-dns.de
ns1071.ui-dns.org
ns1068.ui-dns.com
ns1050.ui-dns.biz

SPF Record

✓ Soft Fail (~all)
v=spf1 include:us_netblocks.mimecast.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate 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

3 records
  • MS=ms40438388
  • SPFv=spf1 include:us_netblocks.mimecast.com ~all
  • Target: 0ed1fe018a6df842f467d341ef9249279d8e9bf576
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