Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
crestmark.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 10:09:53 UTC · ↺ Refresh
MX Hostnames
- crestmark-com.mail.protection.outlook.com
MX Priorities
- crestmark-com.mail.protection.outlook.com: 0
A / AAAA Records
- 23.44.203.73 ↩ a23-44-203-73.deploy.static.akamaitechnologies.com
- 23.44.203.71 ↩ a23-44-203-71.deploy.static.akamaitechnologies.com
Mail Server IPs
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 2a01:111:f403:f908:: ↩ mail-bn1pr21cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
a1-205.akam.net hostmaster.akamai.com 1555431427 43200 7200 604800 7200
Primary NS (mname)
a1-205.akam.net
Admin Email (rname)
hostmaster@akamai.com
Serial
1555431427
Refresh
43200s
Retry
7200s
Expire
604800s
Minimum TTL
7200s
Nameservers (NS)
a1-205.akam.net
a7-66.akam.net
a22-64.akam.net
a6-65.akam.net
a11-66.akam.net
a2-67.akam.net
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:50.204.166.97 ip4:50.204.166.101 ip4:168.245.115.86 ip4:135.84.37.15 ip4:135.84.37.45 ip4:65.113.7.15 ip4:65.113.7.135 include:_spf.salesforce.com include:spf.protection.outlook.com include:e2ma.net include:spf.ess.barracudanetworks.com include:mktomail.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; aspf=r; fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
6 records- MS=ms97487475
- docusign=3b0ad91d-74b6-4965-8305-753737944633
- MS=ms57600477
- ngk5p8vn9sxbll5rd5m331djsl8m7yl9
- SPFv=spf1 ip4:50.204.166.97 ip4:50.204.166.101 ip4:168.245.115.86 ip4:135.84.37.15 ip4:135.84.37.45 ip4:65.113.7.15 ip4:65.113.7.135 include:_spf.salesforce.com include:spf.protection.outlook.com include:e2ma.net include:spf.ess.barracudanetworks.com include:mktomail.com ~all
- docusign=5afb226b-fd4b-4e40-86a9-9103f23ca480
Full email verification for crestmark.com
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