Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
collinsbuilders.net
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 05:36:25 UTC · ↺ Refresh
MX Hostnames
- mx1-us1.ppe-hosted.com
- mx2-us1.ppe-hosted.com
MX Priorities
- mx2-us1.ppe-hosted.com: 20
- mx1-us1.ppe-hosted.com: 10
A / AAAA Records
- 54.243.225.18 ↩ ec2-54-243-225-18.compute-1.amazonaws.com
Mail Server IPs
- 67.231.154.163 ↩ mx2-us1.ppe-hosted.com
- 148.163.129.51 ↩ mx2-us1.ppe-hosted.com
- 148.163.129.50 ↩ mx1-us1.ppe-hosted.com
- 67.231.154.162 ↩ mx1-us1.ppe-hosted.com
SOA Record
Raw SOA
ns1.dynu.com administrator.dynu.com 30 3600 600 604800 1800
Primary NS (mname)
ns1.dynu.com
Admin Email (rname)
administrator@dynu.com
Serial
30
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns2.dynu.com
ns3.dynu.com
ns5.dynu.com
ns6.dynu.com
ns4.dynu.com
ns1.dynu.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_u.collinsbuilders.net._spf.smart.ondmarc.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=r; aspf=r; fo=1; rf=afrf; ri=3600
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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
8 records- ppe-5a495422b86cf783a2e4
- ao2etp5dcukrcdvvira76kimol
- u21rfjd28ct1al247mvehiu7g8
- ms=ms84012127
- muv364jdr8ql2mqnu1c6g3b98b
- SPFv=spf1 include:_u.collinsbuilders.net._spf.smart.ondmarc.com ~all
- 183ms121rtfcsnu0a988qdn62o
- kb3bgnlmdknhmj2qeijq1di1og
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