Domain Overview
DNS: ✓ 13h ago
Checker: ✓ 13h ago
explorelearning.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-20 08:45:14 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 107.162.255.31 (no PTR)
Mail Server IPs
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns1.cambiumlearning.com hostmaster.cambiumlearning.com 2026042903 10800 3600 604800 3600
Primary NS (mname)
ns1.cambiumlearning.com
Admin Email (rname)
hostmaster@cambiumlearning.com
Serial
2026042903
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.cambiumlearning.com
ns1.cambiumlearning.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:149.72.90.214/32 ip4:159.183.198.234/32 ip4:167.89.53.184/32 include:us._netblocks.mimecast.com include:spf.clearslide.com include:mktomail.com include:_spf.salesforce.com include:sendgrid.net ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
25 records- autodesk-domain-verification=T3Aai3_GpinQws56BA-l
- google-site-verification=rabdDOS9txrBTcOdq-MPhronRadizCI0Ga6J2ZTEq4A
- logmein-verification-code=c00344f9-ff26-4ee7-8e9b-8dcdcccecbf9
- google-site-verification=eQ2yAup0HoGW2fTpuaT4IlApLYLuyn05Kco9wj2a_9E
- docusign=e5c4a4b9-39e0-4bd3-8a96-c42227ea5388
- ZOOM_verify_Wsr6O8byRCqSjiVua-Q__A
- pendo-domain-verification=Llp6XQcZqGW6l7S_e1tc4VsrYGE
- google-site-verification=oN46lm4AWJn8vnLVxEOlP5fNgK_bat4tRp4eG-asVHY
- adobe-sign-verification=4aae7998ea08e28c9f1ae5b242be19dd
- MS=ms61272938
- SPFv=spf1 ip4:149.72.90.214/32 ip4:159.183.198.234/32 ip4:167.89.53.184/32 include:us._netblocks.mimecast.com include:spf.clearslide.com include:mktomail.com include:_spf.salesforce.com include:sendgrid.net ~all
- canva-site-verification=DcH0K-c9uZ3E4y0U_Nh9Kg
- canva-site-verification=c0YgirO5pelQI9TJQCNJDw
- adobe-idp-site-verification=ff85075ae1cd2832fbce52b19a8bfca18b661e63dd2cf0a75777e8d0b0ea4bcc
- pendo-domain-verification=42D9C2FE-374C-43CC-B73B-4F81D88525A9
- atlassian-domain-verification=L0bOBwcaCZ7pbCPadtt181ogBzslfAMGJlHJK0Oo8sfjG70P8jLajw/vdPCahnvT
- sending_domain710503=473984378134739c8736260c97f58f848dc5f16388402fe97374c6a2108eb06c
- facebook-domain-verification=oto6y7mwkka3eeg7f61lmqplec669k
- knowbe4-site-verification=c1449f7cb1b859e4bcc180b35084ce1b
- dtm-domain-verification=qTOsmdxIsRRmA84pVGAqWJRcGqDgp4CdlIkw3XjDDh4
- postman-domain-verification=4934880511597bcf00e5f46e5fb923463db929d2c742aaf45f2cee4067636f687e2df220190e5b05d9cc0e64d11125f6457a2a07431daa24f6bc59de9e954890
- pardot1120493=a80cd18805272e0fac645195be3bf884070af7b2d7f4c772d9645a76039dca5f
- miro-verification=09fc44d5072cb7782fa858d5536a5a32b35fb135
- cisco-ci-domain-verification=2c9ef9cdf605aacca1981a5b8a5a29f37752016350b5a3eabb65c21bb5bcaf65
- google-site-verification=7_CPg3Mk5gdDLXj-GHdF-LuAmemHX7_s-mMk0ix7Z9E
Full email verification for explorelearning.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits