Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
otnsystems.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 04:09:39 UTC · ↺ Refresh
MX Hostnames
- mxb-00015a02.gslb.pphosted.com
- mxa-00015a02.gslb.pphosted.com
MX Priorities
- mxb-00015a02.gslb.pphosted.com: 10
- mxa-00015a02.gslb.pphosted.com: 10
A / AAAA Records
- 64.251.211.133 (no PTR)
Mail Server IPs
- 205.220.178.250 ↩ mx0b-00015a02.pphosted.com
SOA Record
Raw SOA
ns1-09.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-09.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns2-09.azure-dns.net
ns3-09.azure-dns.org
ns4-09.azure-dns.info
ns1-09.azure-dns.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
s1._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
10 records- MS=CF2292AD6ABCF8AEBFD6338875EB4F5044C4A8D0
- T5uJHc04nu1+//RIkBwSh6OFdJQYX5RlZ1uIfsIZKPE9T7vSyDdBKZiE8sYQNv8y7+2KN4SXMxb6xHOfhEYLqg==
- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
- dropbox-domain-verification=r04k6bwzj0zq
- knowbe4-site-verification=c7ce79a21d516703d2d186e6379d60f7
- MS=ms26968193 TTL 3600
- google-site-verification=yUX-3fpCz43HPDoFXeQOME7GY5Yst8L8Ui_bcxVrz4g
- citrix-verification-code~f6125e-af54-490d-b098-97ba61cb4037
- domain-verification:d269a02c02d99521d7d911bc0182bf9c2ddc2de1
- Business Network Systems - Belgium
Full email verification for otnsystems.com
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