MailGate › dropbox.com

Email authentication report for dropbox.com

Resolved live from public DNS. Cached up to 6 hours — re-run it now for a fresh result.

A deliverability score 91/100

Records found

SPFv=spf1 ip4:45.58.64.0/20 ip4:185.45.8.0/22 ip4:162.125.0.0/16 ip4:199.47.216.0/22 ip4:108.160.160.0/20 ip4:205.189.0.0/24 ip4:160.34.15.16/28 ip4:52.5.134.202/32 ip4:205.220.162.87/32 ip4:205.220.174.83/32 ip4:167.89.98.146/32 ip4:167.89.89.46/32 ip4:167.89.96.134/32 ip4:159.183.109.97/32 ip4:149.72.220.85/32 ip4:159.183.15.144/32 ip4:159.183.2.51/32 ip4:159.183.2.58/32 ip6:2620:c6:8000::/48 include:amazonses.com include:_spf.google.com include:mail.zendesk.com include:mktomail.com include:rp.oracleemaildelivery.com exists:%{i}._spf.mta.salesforce.com ~all
DMARCv=DMARC1;p=reject;pct=100;rua=mailto:[email protected],mailto:[email protected]
DKIMNo key found on the 22 common selectors (a private selector may still exist).
MX10 mxa-001ed902.gslb.pphosted.com
10 mxb-001ed902.gslb.pphosted.com

What to fix

No DKIM key found on the 22 common selectors. Either your provider uses a custom selector, or DKIM signing is off — without it DMARC fails on any forwarded mail.
SPF record published
SPF ends in ~all (soft fail)
DMARC record published
DMARC policy p=reject (strongest)
DMARC aggregate reports (rua) are being collected
2 MX host(s) configured
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