decemberlabs.com

Valid Email Server
Domain Lookup › decemberlabs.com

Domain Overview

DNS: ✓ 1d ago Checker: ✓ 1d ago
decemberlabs.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-07-01 13:13:06 UTC · ↺ Refresh

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MX Hostnames

  • alt3.aspmx.l.google.com
  • aspmx.l.google.com
  • alt4.aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • alt1.aspmx.l.google.com

MX Priorities

  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1
  • alt3.aspmx.l.google.com: 10
  • alt4.aspmx.l.google.com: 10
  • alt1.aspmx.l.google.com: 5

A / AAAA Records

  • 3.168.122.17
  • 3.168.122.77
  • 3.168.122.83
  • 3.168.122.10

Mail Server IPs

  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 172.253.115.27 ↩ bg-in-f27.1e100.net
  • 2607:f8b0:4004:c21::1a ↩ pe-in-f26.1e100.net
  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 172.253.157.27 ↩ yubrupd-in-f27.1e100.net
  • 2a00:1450:400c:c23::1b ↩ yubrupd-in-f27.1e100.net
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)

SOA Record

Raw SOA ns-81.awsdns-10.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-81.awsdns-10.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1868.awsdns-41.co.uk
ns-534.awsdns-02.net
ns-81.awsdns-10.com
ns-1298.awsdns-34.org

SPF Record

✓ Strict (-all)
v=spf1 include:_spf.google.com include:amazonses.com include:servers.mcsv.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=5;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
⚠ Policy applies to 5% of failing messages only

DKIM Selectors

✓ 1 found
google._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google

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

All TXT Records

4 records
  • detectify-verification=5cbcc4f3d2bc8d4ec7fa221dc13d76cb
  • google-site-verification=Kv1CHJVoLG1qlsGxEeaedM1RuJUL8YhwPXRq5vUDvgQ
  • google-site-verification=mGYdZFg_0sfo9ylerggGLKEMgILaJBwT7GKIL-dIYWU
  • SPFv=spf1 include:_spf.google.com include:amazonses.com include:servers.mcsv.net -all
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