Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
coresite.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 20:34:26 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
- coresite-com.mail.protection.outlook.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 20
- us-smtp-inbound-2.mimecast.com: 20
- coresite-com.mail.protection.outlook.com: 0
A / AAAA Records
- 199.60.103.120
- 199.60.103.20
Mail Server IPs
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 52.101.9.11 ↩ mail-bl2pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f802::1
- 2a01:111:f403:f90b::
- 2a01:111:f403:f908::2
- 2a01:111:f403:f913::1
SOA Record
Raw SOA
ns-1952.awsdns-52.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1952.awsdns-52.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1194.awsdns-21.org
ns-1952.awsdns-52.co.uk
ns-437.awsdns-54.com
ns-874.awsdns-45.net
SPF Record
✓ Strict (-all)
v=spf1 include:ses.onsolve.net include:us._netblocks.mimecast.com include:23381819.spf05.hubspotemail.net include:_spf.salesforce.com include:spf1.coresite.com include:spf.protection.outlook.com include:spfa.cpmails.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- bw=jmZWUm0vc8gBmhealnVPRKLvUdvi2AYvOvTMfb5DlOHi
- docusign=34f8ab80-9771-44d3-9caf-06eb5b6c960f
- google-site-verification=ELlN1UyGCZS-qRS296ytMe5ox59IP4UnMfcy8z5w97o
- openai-domain-verification=dv-0oqQBVCxYQ0USOJ7LKN8uNDV
- SPFv=spf1 include:ses.onsolve.net include:us._netblocks.mimecast.com include:23381819.spf05.hubspotemail.net include:_spf.salesforce.com include:spf1.coresite.com include:spf.protection.outlook.com include:spfa.cpmails.com -all
- 59cf2006ad9e2d672eae81ae60be3104c1b9bfc02f58941981eefb461f8547a2
- GOOGLE-SITE-VERIFICATION=WIU51SYPP3QVXS0LOKAYEKAUDAHSV-NNV_DWT7RUT4A
- YyHMjLAOi3Q/jASglNTHT1bp+0Xd/SC2RlNZXLMfpwOdhZFqu0Lnh6EEUR3tpgV9A5U0T6WNebeXuQgeZFb2aQ==
- apple-domain-verification=YU2MNCMKIX9cimQs
- atlassian-domain-verification=WxyHSBXiK3NayvdW1SrU71zVY8KQU9MMh3l8MP/m8d1h7NYzH4b2z37N3en+rSty
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