yahoo.ne.jp

Valid Email Server
Domain Lookup › yahoo.ne.jp

Domain Overview

DNS: ✓ 10h ago Checker: ✓ 10h ago
yahoo.ne.jp
Yes
✓ Yes
Yahoo
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-20 18:40:19 UTC · ↺ Refresh

MX Hostnames

  • ymobilemx1.mail.yahoo.co.jp

MX Priorities

  • ymobilemx1.mail.yahoo.co.jp: 10

A / AAAA Records

  • 203.216.255.42 (no PTR)
  • 124.83.186.42 (no PTR)
  • 203.216.255.40 (no PTR)
  • 124.83.186.43 (no PTR)
  • 124.83.186.41 (no PTR)
  • 203.216.255.43 (no PTR)
  • 124.83.186.40
  • 203.216.255.41

Mail Server IPs

  • 202.93.78.237 ↩ ymobmtagw0002.mail.vip.otm.ynwp.yahoo.co.jp
  • 124.83.237.239 ↩ ymobmtagw2001.mail.vip.snz.ynwp.yahoo.co.jp
  • 124.83.237.238 ↩ ymobmtagw2002.mail.vip.snz.ynwp.yahoo.co.jp
  • 202.93.77.236 ↩ ymobmtagw0001.mail.vip.otm.ynwp.yahoo.co.jp

SOA Record

Raw SOA yahoo.ne.jp postmaster.yahoo.ne.jp 2605110000 1800 900 1209600 900
Primary NS (mname)
yahoo.ne.jp
Admin Email (rname)
postmaster@yahoo.ne.jp
Serial
2605110000
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
900s

Nameservers (NS)

ns02.yahoo.co.jp
ns12.yahoo.co.jp
ns11.yahoo.co.jp
ns01.yahoo.co.jp

SPF Record

✓ Soft Fail (~all)
v=spf1 redirect=yahoo.co.jp
📊 DNS lookups: 1/10

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rf=afrf; rua=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]

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
  • cVvRe9PfHhm3ycaotBKx72L7tURMGd
  • SPFv=spf1 redirect=yahoo.co.jp
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