Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
corehf.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 13:09:11 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- aspmx.l.google.com
- alt2.aspmx.l.google.com
- corehf-com.mail.protection.outlook.com
MX Priorities
- aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 20
- alt2.aspmx.l.google.com: 20
- corehf-com.mail.protection.outlook.com: 1
A / AAAA Records
- 216.239.34.21
- 216.239.36.21
- 216.239.38.21
- 216.239.32.21
Mail Server IPs
- 192.178.155.27 ↩ yuiadrs-in-f27.1e100.net
- 2607:f8b0:4004:c17::1a ↩ bl-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 52.101.194.19 ↩ mail-ch5pr02cu00303.inbound.protection.outlook.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
SOA Record
Raw SOA
a7.uberns.com knguyen.rimkus.com 2603100000 14400 7200 1209600 300
Primary NS (mname)
a7.uberns.com
Admin Email (rname)
knguyen@rimkus.com
Serial
2603100000
Refresh
14400s
Retry
7200s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
a7.uberns.com
b7.uberns.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:servers.mcsv.net include:spfa.mailendo.com include:spfa.cpmails.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine; rua=mailto:[email protected];ruf=mailto:[email protected];pct=90; sp=none
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
⚠ Policy applies to 90% of failing messages only
DKIM Selectors
✓ 6 found
google._domainkey
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
13 records- box-domain-verification=c1b51ca8a93b8b3c02847937a595e9f2c43e4d7e302b330c565ce3d849ce1430
- cisco-ci-domain-verification=e1ecd9fe95eb0ca2c5c62eb7068f615269652094f49c518dc13886465d62444
- SPFv=spf1 include:_spf.google.com include:servers.mcsv.net include:spfa.mailendo.com include:spfa.cpmails.com include:spf.protection.outlook.com ~all
- MS=ms29991540
- spf1 include:_spf.google.com ~all
- asv=cb698eaa148d9eeed88d767ee05dc0d7
- apple-domain-verification=nZ7XSiPV67TDQfsJ
- autodesk-domain-verification=2IsLaPw-_UGmbpJTOaUj
- knowbe4-site-verification=b029e5b8e9c563fa3d8f4986be15be11
- google-site-verification=4f_8X5L1b5aZpF_yGiwKARkkacVnwq4HzzVgKgnqqgY
- google-site-verification=ewF5TUZy8gPfgRJM20oI6TSzB9dsWNJJfv1hsaggJAo
- google-site-verification=m3TC6tx0aDY0cg-YDM_WbtDOuecKqUkDEOgzCOgpEjM
- google-site-verification=w4Xr9tY6fx_9Dwqwq__vwpyDTjHUxB6Xkzh4TUP2Uwk
Full email verification for corehf.com
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