Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
acid21.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 08:57:03 UTC · ↺ Refresh
MX Hostnames
- acid21-com.mail.protection.outlook.com
MX Priorities
- acid21-com.mail.protection.outlook.com: 10
A / AAAA Records
- 166.117.102.149 ↩ ad7826c5a5e4ae3a3.awsglobalaccelerator.com
Mail Server IPs
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-692.awsdns-22.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-692.awsdns-22.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-314.awsdns-39.com
ns-692.awsdns-22.net
ns-1058.awsdns-04.org
ns-2019.awsdns-60.co.uk
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:49413430.spf02.hubspotemail.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1:d:s
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._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
7 records- google-site-verification=Mu9fbF8RmykHqRxDskn8Nxa6qowf0hueguqvloKBPeA
- google-site-verification=v2jABkssSf-nEChK4_xFzk3bk6XyEGdvzbP1fH-dDgk
- one-time-verification=7022e8dc-a726-41c9-b773-62d7b42e2ffc
- SPFv=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:49413430.spf02.hubspotemail.net -all
- MS=ms39433252
- atlassian-domain-verification=j8y5zMouXSicUntmgd8mz1nntx1Zomv2GkyYjv/rXzHkq/YeJ1UCUJfc30f0ME6H
- google-site-verification=66pIlNcDrhWrmVRb8j8RtCpRr3MEYQiRa_ZrukFYLt0
Full email verification for acid21.com
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