Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
501c3.org
Yes
✓ Yes
Mailgun
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 01:50:03 UTC · ↺ Refresh
MX Hostnames
- mxb.mailgun.org
- mxa.mailgun.org
- 501c3-org.mail.protection.outlook.com
MX Priorities
- mxb.mailgun.org: 10
- 501c3-org.mail.protection.outlook.com: 0
- mxa.mailgun.org: 10
A / AAAA Records
- 162.159.135.42 (no PTR)
Mail Server IPs
- 34.149.236.64 ↩ 64.236.149.34.bc.googleusercontent.com
SOA Record
Raw SOA
ns-1660.awsdns-15.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1660.awsdns-15.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1660.awsdns-15.co.uk
ns-427.awsdns-53.com
ns-607.awsdns-11.net
ns-1181.awsdns-19.org
SPF Record
✓ Soft Fail (~all)
v=spf1 include:mailgun.org ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
8 records- google-site-verification=jzChg8-XJZD3OPLYUtK1bMFOlt2RHtZzlQcwJGw3svU
- google-site-verification=ycQ_hcQdxVUyHz8mHyT4nT4qzLd1XL6V5bEJNX9QzXg
- SPFv=spf1 include:mailgun.org ~all
- SPFv=spf1 include:secureserver.net -all
- MS=ms77272091
- ca3-bfc95a004d4d408bb442f3fdcc19f7d0
- google-site-verification=DXsLXX0NJ21sFOvDzZjeySQO-GY1CTjcplvNTMlEaKM
- google-site-verification=FhLtud4BpCkBSi8i0-0wK8JfkIAWrQb_u--7OdTcf_I
Full email verification for 501c3.org
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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