smtb.jp

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago

Domain

smtb.jp

Valid Email Server

Yes

Has MX Records

✓ Yes

Email Provider

Unknown

Disposable

Free Provider

Role Account

⚠ Yes

Email Relay

Privacy Protected

Did you mean: [email protected]

Checked via [email protected] · 2026-03-18 15:21:32 UTC · ↺ Refresh

MX Hostnames

mx.securemx.jp

MX Priorities

mx.securemx.jp: 10

A / AAAA Records

23.200.3.231 ↩ a23-200-3-231.deploy.static.akamaitechnologies.com
23.200.3.233 ↩ a23-200-3-233.deploy.static.akamaitechnologies.com

Mail Server IPs

210.130.202.96 ↩ mx114a.securemx.jp
210.130.202.99 ↩ mx180a.securemx.jp
210.130.202.92 ↩ mx180b.securemx.jp
210.130.202.93 ↩ mx114b.securemx.jp

SOA Record

                  Raw SOA
                  a1-105.akam.net alert.smtb.jp 2026030901 300 60 604800 300                

Primary NS (mname)

a1-105.akam.net

Admin Email (rname)

alert@smtb.jp

Serial

2026030901

Refresh

300s

Retry

60s

Expire

604800s

Minimum TTL

300s

Nameservers (NS)

                      a1-105.akam.net                    

                      a8-67.akam.net                    

                      a20-65.akam.net                    

                      a5-66.akam.net                    

                      a9-64.akam.net                    

                      a10-64.akam.net                    

SPF Record

✓ Soft Fail (~all)

                    v=spf1 +ip4:133.250.190.196 +ip4:133.250.190.230/31 +ip4:133.250.190.234 +ip4:209.137.134.200 +ip4:52.155.113.159 +ip4:52.155.114.14 +ip4:40.81.182.20 +ip4:157.101.255.19 +ip4:157.101.254.19 include:spf.smktg.jp include:_spf.salesforce.com include:spf-a.smtb.jp include:spf11.mediagalaxy.ne.jp include:spf.e-shishobako.ne.jp ~all                  

📊 DNS lookups: 6/10

~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine

                    v=DMARC1; p=quarantine; fo=1; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]                  

~ Quarantine — good protection (failing mail goes to spam)

📋 SPF alignment: Relaxed · DKIM alignment: Relaxed

📧 Reports → mailto:[email protected],mailto:[email protected]

DKIM Selectors

✓ 2 found

                      s1._domainkey
                    

                      s2._domainkey
                    

✓ Public key: 392 chars (valid)

✓ DKIM properly configured for selector: s1

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

All TXT Records

9 records

pardot1046933=6d52e35322ec4fa3f1efd544b5dc5636ba8eff7ba16913701704d1091403f84c
LtjoyJ+2h8dFng+hD10Wh6EJ9TtJ8Y+M9hPGXuqkZ1jKEjDtU1edXlT7bPqA355D+CH6qe3YKvjXGx2rJJ7l+w==
SPFv=spf1 +ip4:133.250.190.196 +ip4:133.250.190.230/31 +ip4:133.250.190.234 +ip4:209.137.134.200 +ip4:52.155.113.159 +ip4:52.155.114.14 +ip4:40.81.182.20 +ip4:157.101.255.19 +ip4:157.101.254.19 include:spf.smktg.jp include:_spf.salesforce.com include:spf-a.smtb.jp include:spf11.mediagalaxy.ne.jp include:spf.e-shishobako.ne.jp ~all
pardot829813=c8378b38e4ac3b604c3e54bde19dca033036b6209b1b8f57a3eb7d31d2baee96
pardot829813=f22498070dfa1998bf19ed24a0796e178ca42da27997338a5137930c4bcf5386
S0U3M94006
sending_domain1046933=b2ec3565734dedd6f148290a8e703fa59763a42d12a1f7a68a614ab76c4f8862
MS=ms34603609
asv=c296315d2a4bc824f7b2363f47c81fe9

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