Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
buildingtechsystems.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 17:41:51 UTC · ↺ Refresh
MX Hostnames
- buildingtechsystems-com.mail.protection.outlook.com
MX Priorities
- buildingtechsystems-com.mail.protection.outlook.com: 0
A / AAAA Records
- 199.60.103.157 (no PTR)
- 199.60.103.57 (no PTR)
Mail Server IPs
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.dnsbycomodo.net admin.dns.com 2026031601 10800 864000 7200 7200
Primary NS (mname)
ns1.dnsbycomodo.net
Admin Email (rname)
admin@dns.com
Serial
2026031601
Refresh
10800s
Retry
864000s
Expire
7200s
Minimum TTL
7200s
Nameservers (NS)
ns2.dnsbycomodo.net
ns1.dnsbycomodo.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:96.66.69.185 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
2 records- SPFv=spf1 ip4:96.66.69.185 include:spf.protection.outlook.com -all
- MS=ms35337068
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