Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
doorsystems.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 22:12:18 UTC · ↺ Refresh
MX Hostnames
- doorsystems-com.mail.protection.outlook.com
MX Priorities
- doorsystems-com.mail.protection.outlook.com: 0
A / AAAA Records
- 199.60.103.23 (no PTR)
- 199.60.103.123 (no PTR)
Mail Server IPs
- 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.cscdns.net hostmaster.cscdns.net 2018091268 28800 7200 604800 14400
Primary NS (mname)
dns1.cscdns.net
Admin Email (rname)
hostmaster@cscdns.net
Serial
2018091268
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
14400s
Nameservers (NS)
dns2.cscdns.net
dns1.cscdns.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:141.81.167.228 a ip4:193.143.55.86 ip4:193.143.55.85 ip4:193.143.55.84 include:spf.protection.outlook.com ip4:192.185.4.103 include:7014622.spf06.hubspotemail.net include:dedicated.mysmtp.com ip4:35.214.212.238 ip4:35.214.183.81 ip4:35.214.208.81 ip4:35.214.213.218 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1
✓ Reject — strongest protection
📋 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
7 records- teamviewer-sso-verification=8587f2d9a37e40afb5418c6ab463781b
- spycloud-domain-verification=33325926-7f97-43ad-8256-8a00aa514787
- micHQbC6aGV+/QOGSasYjyCS1RMXyEvmUS6xrSAfzuQ2ViU0B+7f/2exMqF7CH6+w6Kh5YO6EyIXW93W6KHGdw==
- dell-technologies-domain-verification=doorsystems.com_fffc4d7d-01ec-4259-8d41-655dd4a9c05e_1730382368
- DKIMv=DKIM1;k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3pJjMny4mCDGAmCR0i90QY8P5ppZcnanovH0QqD4lb66Bkg3d2VJ+3/17y4/UzOeiV0t+ZzZRyTrM4yiTPBWOtoeA0dbEQiA+q1MmShRTj4jiFFdGBy29NT/N4L7h4Ol6vmJumHjWk201q6AEdKzxwNzS+sM6fWCF/CfNnlWVDQIDAQAB
- SPFv=spf1 ip4:141.81.167.228 a ip4:193.143.55.86 ip4:193.143.55.85 ip4:193.143.55.84 include:spf.protection.outlook.com ip4:192.185.4.103 include:7014622.spf06.hubspotemail.net include:dedicated.mysmtp.com ip4:35.214.212.238 ip4:35.214.183.81 ip4:35.214.208.81 ip4:35.214.213.218 -all
- 2351810
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