slack.com

Checked 5/14/2026, 10:50:54 PM · 4ms

Solid: p=reject is enforced.

DMARC record

v=DMARC1;p=reject;fo=1:d:s;pct=100;rua=mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected]

Policy (p): reject
Subdomain policy (sp): inherits p=reject
Enforcement % (pct): 100%
DKIM alignment (adkim): unset · defaults to r (relaxed)
SPF alignment (aspf): unset · defaults to r (relaxed)
Aggregate reports (rua): mailto:[email protected], mailto:[email protected]
Failure reports (ruf): mailto:[email protected]

All tags (6)

vDMARC1DMARC version
prejectPolicy for the domain
fo1:d:sFailure reporting options
pct100Percentage of mail subject to policy (0-100)
ruamailto:[email protected],mailto:[email protected]Aggregate report URIs
rufmailto:[email protected]Forensic (failure) report URIs

SPF record

Found on the apex domain.

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

Recommendations

DKIM alignment (adkim) is unset, so it defaults to r (relaxed). That is fine for most deployments. Set adkim=s explicitly only if your DKIM d= header matches the From: domain exactly.
SPF alignment (aspf) is unset, so it defaults to r (relaxed). That is fine for most deployments. Set aspf=s explicitly only if your Return-Path aligns with the From: domain exactly.

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