heroku.com email records
What heroku.com publishes in public DNS for SPF, DKIM, DMARC, MX and BIMI, resolved on 2026-08-04.
SPF
v=spf1 ip4:167.89.4.18 include:_spf.google.com include:mailgun.org include:aspmx.pardot.com exists:%{i}._spf.corp.salesforce.com ~all
9 of 10 DNS lookups — close to the limit.
The record authorises these sending platforms: Google Workspace, Mailgun.
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 10 probed selectors:
MX
Notes on this configuration
SPF uses 9 of the 10 permitted DNS lookups.
Check it live
The above is a snapshot from 2026-08-04. Re-resolve it now: