tstech.co.jp

Valid Email Server
Domain Lookup › tstech.co.jp

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
tstech.co.jp
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-26 11:07:57 UTC · ↺ Refresh

MX Hostnames

  • sdc-smtpd-in.secomtrust.net

MX Priorities

  • sdc-smtpd-in.secomtrust.net: 10

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 165.100.249.199 ↩ sdc-smtpd-in.secomtrust.net

SOA Record

Raw SOA ns01.secomtrust.net sdc-sec.secomtrust.net 2025072500 7200 1800 2419200 300
Primary NS (mname)
ns01.secomtrust.net
Admin Email (rname)
sdc-sec@secomtrust.net
Serial
2025072500
Refresh
7200s
Retry
1800s
Expire
2419200s
Minimum TTL
300s

Nameservers (NS)

a14-66.akam.net
a26-64.akam.net
a1-129.akam.net
a3-64.akam.net
a13-64.akam.net
a28-66.akam.net

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.secomtrust.net +ip4:113.52.157.229/32 include:_spf.cmsod.jp ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; ri=604800
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

2 records
  • google-site-verification=EGaE32Fib9aqo4fNR_Rni9SekjkRVBQXQM-g5ilfP-M
  • SPFv=spf1 include:_spf.secomtrust.net +ip4:113.52.157.229/32 include:_spf.cmsod.jp ~all
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