Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
heidelberg.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 03:07:27 UTC · ↺ Refresh
MX Hostnames
- heidelberg-com.mail.protection.outlook.com
MX Priorities
- heidelberg-com.mail.protection.outlook.com: 5
A / AAAA Records
- 5.44.96.79 (no PTR)
Mail Server IPs
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 52.101.73.16 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.heidelberg.com dnsadmin.heidelberg.com 2008022594 10800 3600 2419200 14400
Primary NS (mname)
ns1.heidelberg.com
Admin Email (rname)
dnsadmin@heidelberg.com
Serial
2008022594
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
14400s
Nameservers (NS)
ns2.heidelberg.com
ns1.heidelberg.com
SPF Record
✓ Strict (-all)
v=spf1 include:a._spf.heidelberg.com include:a2._spf.heidelberg.com include:a3._spf.heidelberg.com include:a4._spf.heidelberg.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
19 records- SPFv=spf1 include:a._spf.heidelberg.com include:a2._spf.heidelberg.com include:a3._spf.heidelberg.com include:a4._spf.heidelberg.com -all
- MS=ms68306619
- 6aFDF11x200II79Isx4LLtjBULhrsfen5vnk4h9B1DJC1biMaxVx+4iAI27KjOQGA3rGJgR/30H9OOBgUzG7Ww==
- skvug425
- pardot973933=18b9619800eb86b55b895fda2d75a1acd791f0efbf9ec073f00be731d7b1fc59
- bw=cbzmWRHeDVDoMvCb6WvZ19z2jYfKpC3x7GQZdtwrC29K
- google-site-verification=jYBQRK2HBa56JJO454lUFc08YAbXp3QJzjLTwi9biOA
- cisco-ci-domain-verification=4ca655b3cb76d1e1a27fd0c47c8126c91e06cd205dd870d06cfd7ced4879824b
- pardot991622=d01dab3ad53e88957202c915d49ffe9fb20a04c6f5e61eab71d3c3dec242ae64
- teamviewer-sso-verification=03da593653d74fe29b61c44a5edae2b6
- docusign=5e5a5f1a-6d35-4c30-a4ce-691a257cc621
- miro-verification=499d0c18694c9a2c466768405e2a97bc6e19c007
- apple-domain-verification=PytmDtgCcIt7q4Lq
- google-site-verification=7e7_r8MFopNYp121G3wis8Wn9KaMHHYvgq__hvCAXik
- brevo-code:a4e2850914c69e1c7dfb295d08c702c1
- atlassian-domain-verification=Gp9iPHP2vr9B4bfi6qitniyB3i2sJwTVh5wgGHknnMVXCegQopGRa4xIg4blqM4h
- mongodb-site-verification=G5wV4LrloeRk5yT0WJtQ0tbXlW1koXuC
- Foxit-domain-verification=833a0d0cb4b0e5e591f59191d2df3a02
- docusign=cfbe89a7-4c68-4d04-962b-61b853ab7cf7
Full email verification for heidelberg.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits