slack.com email records

What slack.com publishes in public DNS for SPF, DKIM, DMARC, MX and BIMI, resolved on 2026-08-04.

SPF

v=spf1 include:_spf.qualtrics.com include:mail.zendesk.com include:_spfextra.slack.com -all

The record authorises these sending platforms: Qualtrics, Zendesk.

DMARC

v=DMARC1;p=reject;fo=1:d:s;pct=100;rua=mailto:dmarc_agg@vali.email,mailto:0e5a5c34@inbox.ondmarc.com;ruf=mailto:0e5a5c34@inbox.ondmarc.com

policy

p=reject

applies to

100% of mail

reports

mailto:dmarc_agg@vali.email,mailto:0e5a5c34@inbox.ondmarc.com

alignment

adkim=r, aspf=r

DKIM

Keys found on 1 of 24 probed selectors:

MX

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The above is a snapshot from 2026-08-04. Re-resolve it now:

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