fastmail.com email records
What fastmail.com publishes in public DNS for SPF, DKIM, DMARC, MX and BIMI, resolved on 2026-08-04.
SPF
v=spf1 include:spf.messagingengine.com ~all
1 of 10 DNS lookups.
The record authorises this sending platform: Fastmail.
DMARC
v=DMARC1; p=none; rua=mailto:e3936a44@inbox.ondmarc.com
- policy
- p=none
- applies to
- 100% of mail
- reports
- mailto:e3936a44@inbox.ondmarc.com
- alignment
- adkim=r, aspf=r
DKIM
Keys found on 2 of 24 probed selectors:
MX
Notes on this configuration
DMARC policy is p=none, which only monitors and blocks nothing.
Check it live
The above is a snapshot from 2026-08-04. Re-resolve it now: