Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jacobs.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 00:07:57 UTC · ↺ Refresh
MX Hostnames
- mxb-0025cf01.gslb.pphosted.com
- mxa-0025cf01.gslb.pphosted.com
MX Priorities
- mxb-0025cf01.gslb.pphosted.com: 10
- mxa-0025cf01.gslb.pphosted.com: 10
A / AAAA Records
- 3.230.178.39 ↩ ec2-3-230-178-39.compute-1.amazonaws.com
Mail Server IPs
- 148.163.148.40 ↩ mx0a-0025cf01.pphosted.com
- 148.163.152.22 ↩ mx0b-0025cf01.pphosted.com
SOA Record
Raw SOA
ns1-08.azure-dns.com dnslevel3.jacobs.com 930173595 900 600 86400 3600
Primary NS (mname)
ns1-08.azure-dns.com
Admin Email (rname)
dnslevel3@jacobs.com
Serial
930173595
Refresh
900s
Retry
600s
Expire
86400s
Minimum TTL
3600s
Nameservers (NS)
ns3-08.azure-dns.org
ns4-08.azure-dns.info
ns1-08.azure-dns.com
ns2-08.azure-dns.net
SPF Record
✓ Strict (-all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected];fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
23 records- parkable-domain-verification=spAiXmXNI2xMeSyKm1YCcchFIY-VQ8PCrvhB78ivP-w=
- adobe-idp-site-verification=7f1bdb4d0a06e04078341f47244eee943c59b56b5a3e39aca48b02b2cd2cd5e0
- docusign=6f1305c5-e5fc-42fc-8afb-79909896f5ed
- docusign=4ae18026-107f-489e-9da3-255ff57a1b05
- duo_sso_verification=h3yqDFm1JuWpL4OM6VlC0nmum4AE3SCwnvsduPgmRuuYPXA6SlfrzBqV2VSdGArx
- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
- 8vf0p03xyys3ts31k1mvb6qdjtgv0kcn
- atlassian-domain-verification=Da9nYIWWvPb1t5BmeHczgum7s3PyD4r9nwczZmDWHBxqyjw68WUVyWF3DVHsZgtJ
- smartsheet-site-validation=gG_HrIm5PNxZE3KJbTNTF8_Fgm-DRD6_
- gBBcr+miJUCECfWGQW8gnsrkV7SItK5Cpzy8zO36rihMs+AHz6pvgIOWlEcERtrK4kOFSQ1Tr65ZTuMBfL99Yw==
- google-site-verification=zIR8c42jGoAIlnY9gUQ6v6UGWOpzkxA5XIPFVnWvlsM
- waukesha.azurewebsites.net
- sending_domain934003=02d831ab6d225a3f496583530f8602da0c04a94d9f96d5502d34a8e9b1a8c1d6
- C05F2DDEF47F43CDA402F5DA4D042560B304C41B666A746DF3A265400E486D55
- pardot1070232=d1128eb387916f9c11531cd2cd9b59fe4a8d61e48f6c79afb94ccee8fb0b552a
- docusign=60240bd9-d7a9-421e-abea-7d9a80d4f305
- e2ma-verification=g3reb
- apple-domain-verification=cVbKQDxW79lf7fQg
- atlassian-domain-verification=EJpsGNqX5DXedmfQY7Kys4oFHvdhCuTHflBuqDrcoc3Ut6jrFF7bK8EbImi1irbz
- adobe-sign-verification=66a567c26b2d4c30f092ac3c6e6c7bc7
- t67r4s4vp6btmx2d3bcnj1lzx5q0bnfp
- cisco-ci-domain-verification=26d93c388df65d983c7782d8705211aee43729a5fa092b032a5b0642757bc596
- _38hschrj06vt537ts3yxewqsvhmtqi6
Full email verification for jacobs.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits