Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
opensystemstech.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 05:59:53 UTC · ↺ Refresh
MX Hostnames
- aspmx2.googlemail.com
- aspmx3.googlemail.com
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- alt1.aspmx.l.google.com
MX Priorities
- aspmx3.googlemail.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- aspmx2.googlemail.com: 10
A / AAAA Records
- 15.197.230.23 ↩ a013a09563accb667.awsglobalaccelerator.com
- 3.33.229.87 ↩ a013a09563accb667.awsglobalaccelerator.com
Mail Server IPs
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.63.27 ↩ bi-in-f27.1e100.net
- 2607:f8b0:4004:c07::1a ↩ bc-in-f26.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
SOA Record
Raw SOA
dns31.cloudns.net support.cloudns.net 2026012901 7200 1800 1209600 3600
Primary NS (mname)
dns31.cloudns.net
Admin Email (rname)
support@cloudns.net
Serial
2026012901
Refresh
7200s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
dns33.cloudns.net
dns32.cloudns.net
dns34.cloudns.net
dns31.cloudns.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:mailgun.org include:dnsexit.com include:spf.jobdiva.com include:spf.protection.outlook.com include:_spf.bullhornmail.com include:_spf.smtp.com ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
google._domainkey
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- google-site-verification=KKqIBPzytk7TglBTvva0ggfxciJFspJd07XJSYuNTTg
- MS=BFBB0D61647E80ED3568363556E8000591EEC1F3
- google-site-verification=9paEvc1jWZ6xlytt9yL4hpBadaUNq0HsDVX8EoCnYzU
- SPFv=spf1 include:_spf.google.com include:mailgun.org include:dnsexit.com include:spf.jobdiva.com include:spf.protection.outlook.com include:_spf.bullhornmail.com include:_spf.smtp.com ~all
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