Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
acssecurity.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 19:24:20 UTC · ↺ Refresh
MX Hostnames
- acssecurity-com.mail.protection.outlook.com
MX Priorities
- acssecurity-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.18.185.50 (no PTR)
Mail Server IPs
- 52.101.40.6 ↩ mail-cy1pr03cu00106.inbound.protection.outlook.com
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c902::4 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
SOA Record
Raw SOA
dorthy.ns.cloudflare.com dns.cloudflare.com 2397342209 10000 2400 604800 1800
Primary NS (mname)
dorthy.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397342209
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ed.ns.cloudflare.com
dorthy.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:us._netblocks.mimecast.com include:eu._netblocks.mimecast.com include:servers.mcsv.net include:_spf.salesforce.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];fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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- SPFv=spf1 include:us._netblocks.mimecast.com include:eu._netblocks.mimecast.com include:servers.mcsv.net include:_spf.salesforce.com include:spf.protection.outlook.com ~all
- 148.105.251.18
- MS=ms58219099
- google-site-verification=kVZOR23NfeNvsejDWdKHlJBxM65Hr3mUTnRGkriuDuc
- knowbe4-site-verification=242637e34ec1c36f4eb225d5b690d7e2
- mimecast20220823._domainkey.acssecurity.com
Full email verification for acssecurity.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits