Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gtssdna.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 18:27:54 UTC · ↺ Refresh
MX Hostnames
- gtssdna-com.mail.protection.outlook.com
MX Priorities
- gtssdna-com.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.167.227 (no PTR)
- 104.21.13.14 (no PTR)
- 2606:4700:3036::ac43:a7e3
- 2606:4700:3035::6815:d0e
Mail Server IPs
- 52.101.190.1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
- 52.101.190.2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 52.101.192.0 ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com
- 52.101.192.1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 2a01:111:f403:c942::1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
- 2a01:111:f403:c942::3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c944::1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 2a01:111:f403:c942:: ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
dan.ns.cloudflare.com dns.cloudflare.com 2396514478 10000 2400 604800 1800
Primary NS (mname)
dan.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396514478
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
opal.ns.cloudflare.com
dan.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:sendgrid.net include:sparkpostmail.com ip4:162.208.91.0/24 ip4:23.83.209.0/24 ip4:23.83.212.0/24 ip4:23.83.215.0/24 ip4:172.255.62.10/31 ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._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
1 record- SPFv=spf1 include:spf.protection.outlook.com include:sendgrid.net include:sparkpostmail.com ip4:162.208.91.0/24 ip4:23.83.209.0/24 ip4:23.83.212.0/24 ip4:23.83.215.0/24 ip4:172.255.62.10/31 ~all
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