Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mail.rakuten.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 23:48:47 UTC · ↺ Refresh
MX Hostnames
- mail-rakuten-com.mail.protection.outlook.com
MX Priorities
- mail-rakuten-com.mail.protection.outlook.com: 0
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 52.101.157.40 ↩ mail-os9p286cu00100.inbound.protection.outlook.com
- 52.101.124.0 ↩ mail-tycp286cu02600.inbound.protection.outlook.com
- 52.101.124.6 ↩ mail-tyvp286cu00206.inbound.protection.outlook.com
- 52.101.157.11 ↩ mail-os0p286cu01203.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.rakuten.co.jp postmaster.rakuten.co.jp 2025021977 3600 1800 2592000 3600
Primary NS (mname)
ns.rakuten.co.jp
Admin Email (rname)
postmaster@rakuten.co.jp
Serial
2025021977
Refresh
3600s
Retry
1800s
Expire
2592000s
Minimum TTL
3600s
Nameservers (NS)
a2-65.akam.net
a3-66.akam.net
a5-67.akam.net
a1-60.akam.net
a18-64.akam.net
a12-67.akam.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf01.rakuten.co.jp include:spf02.rakuten.co.jp include:spf03.rakuten.co.jp include:rnmk.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- NN/F2FL+u0AmDkndfAPpd6ShFApYiIk0TAitUovcfdTrmnZsPYRm8Xq+00q0V20bwcf8cWKfJwVqjyU2M58gOg==
- SPFv=spf1 include:spf01.rakuten.co.jp include:spf02.rakuten.co.jp include:spf03.rakuten.co.jp include:rnmk.com ~all
- google-site-verification=wnHsjcRXI8uhSf3_JmehjtVVitk-GyH2MQmtWBeDJBw
- apple-domain-verification=mSll09p1SEQcrEoM
- apple-domain-verification=IOS4EQASeDqkcUOt
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