Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dchsystem.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 23:55:22 UTC · ↺ Refresh
MX Hostnames
- mxa-0031a501.gslb.pphosted.com
- mxb-0031a501.gslb.pphosted.com
MX Priorities
- mxa-0031a501.gslb.pphosted.com: 5
- mxb-0031a501.gslb.pphosted.com: 5
A / AAAA Records
- 52.11.37.152 ↩ ec2-52-11-37-152.us-west-2.compute.amazonaws.com
- 34.224.10.110 ↩ ec2-34-224-10-110.compute-1.amazonaws.com
Mail Server IPs
- 205.220.176.248 ↩ mx0b-0031a501.pphosted.com
- 205.220.164.248 ↩ mx0a-0031a501.pphosted.com
SOA Record
Raw SOA
ns1.dchsystem.com hostadmin.dchsystem.com 20220737 300 300 86400 300
Primary NS (mname)
ns1.dchsystem.com
Admin Email (rname)
hostadmin@dchsystem.com
Serial
20220737
Refresh
300s
Retry
300s
Expire
86400s
Minimum TTL
300s
Nameservers (NS)
ns1.dchsystem.com
ns3.dchsystem.com
SPF Record
✓ Strict (-all)
v=spf1 mx a include:_spf.sonicsecuremail.com include:spf-0031a501.pphosted.com include:_spf.elasticemail.com include:mail.securescreening.info include:spf.protection.outlook.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
s1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 mx a include:_spf.sonicsecuremail.com include:spf-0031a501.pphosted.com include:_spf.elasticemail.com include:mail.securescreening.info include:spf.protection.outlook.com -all
- eKUW1s7MElU0RTIABOgBW89W3J5zaJiuB/EaNYwzKi2Up6XyYKEuuxjMEnOVeb1Y+IiOVwPPDp6OmlQDpwpMzA==
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