Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
singaporetuitionteachers.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 23:27:08 UTC · ↺ Refresh
MX Hostnames
- mail.singaporetuitionteachers.com
MX Priorities
- mail.singaporetuitionteachers.com: 0
A / AAAA Records
- 15.235.180.188 ↩ singaporetuitionteachers.com
- 2402:1f00:8001:19bc:: ↩ singaporetuitionteachers.com
Mail Server IPs
- 15.235.180.188 ↩ singaporetuitionteachers.com
- 2402:1f00:8001:19bc:: ↩ singaporetuitionteachers.com
SOA Record
Raw SOA
ns-389.awsdns-48.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-389.awsdns-48.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1182.awsdns-19.org
ns-1997.awsdns-57.co.uk
ns-389.awsdns-48.com
ns-979.awsdns-58.net
SPF Record
✓ Soft Fail (~all)
v=spf1 +a +mx +a:host.singaporetuitionteachers.com +a:hosting.singaporetuitionteachers.com include:spf.mailjet.com include:spf.sendinblue.com +ip4:103.11.191.49 +ip4:103.11.191.115 +ip6:2402:1f00:8001:19bc::/64 ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; adkim=s; aspf=s; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
default._domainkey
mail._domainkey
✓ Public key: 5 chars (valid)
⚠ Public key too short (5 chars) — DKIM may be invalid.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 +a +mx +a:host.singaporetuitionteachers.com +a:hosting.singaporetuitionteachers.com include:spf.mailjet.com include:spf.sendinblue.com +ip4:103.11.191.49 +ip4:103.11.191.115 +ip6:2402:1f00:8001:19bc::/64 ~all
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