MailGate › slack.com

Email authentication report for slack.com

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

A deliverability score 95/100

Records found

SPFv=spf1 include:_spf.qualtrics.com include:mail.zendesk.com include:_spfextra.slack.com -all
DMARCv=DMARC1;p=reject;fo=1:d:s;pct=100;rua=mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected]
DKIMNo key found on the 22 common selectors (a private selector may still exist).
MX1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 aspmx2.googlemail.com
10 aspmx3.googlemail.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 (hard fail)
DMARC record published
DMARC policy p=reject (strongest)
DMARC aggregate reports (rua) are being collected
5 MX host(s) configured
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Other domains

zoom.us github.com dropbox.com netflix.com spotify.com linkedin.com x.com facebook.com instagram.com tiktok.com reddit.com wikipedia.org google.com gmail.com microsoft.com outlook.com yahoo.com apple.com

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