Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
heidelberg.edu
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 06:06:11 UTC · ↺ Refresh
MX Hostnames
- ALT1.ASPMX.L.GOOGLE.COM
- ALT2.ASPMX.L.GOOGLE.COM
- ASPMX.L.GOOGLE.COM
- ASPMX3.GOOGLEMAIL.COM
- ASPMX2.GOOGLEMAIL.COM
MX Priorities
- aspmx.l.google.com: 1
- aspmx3.googlemail.com: 10
- aspmx2.googlemail.com: 10
- alt2.aspmx.l.google.com: 5
- alt1.aspmx.l.google.com: 5
A / AAAA Records
- 23.185.0.4 (no PTR)
- 2620:12a:8000::4
- 2620:12a:8001::4
Mail Server IPs
- 172.253.122.26 ↩ bh-in-f26.1e100.net
- 2607:f8b0:4004:c23::1b ↩ yuiadrs-in-f27.1e100.net
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
SOA Record
Raw SOA
ns0.oar.net hostmaster.oar.net 2025091501 300 21600 604800 300
Primary NS (mname)
ns0.oar.net
Admin Email (rname)
hostmaster@oar.net
Serial
2025091501
Refresh
300s
Retry
21600s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1.oar.net
ns2.oar.net
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:131.187.180.46 include:_spf.google.com include:spf.dynect.net a:insitesmtp.mbsbooks.com include:_spf.psm.knowbe4.com include:_tuf-spf.touchnet.com include:mailgun.org ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 3 found
google._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=1d2NhIN1lULxiqcyMKA7FJ88grk3Ed63P4W7Bac8FJI
- MS=ms81086725
- SPFv=spf1 ip4:131.187.180.46 include:_spf.google.com include:spf.dynect.net a:insitesmtp.mbsbooks.com include:_spf.psm.knowbe4.com include:_tuf-spf.touchnet.com include:mailgun.org ~all
- 9ud3hrrh4lqumtl2eflrd7v2ai
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