costco.com email records
What costco.com publishes in public DNS for SPF, DKIM, DMARC, MX and BIMI, resolved on 2026-08-04.
SPF
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
1 of 10 DNS lookups.
DMARC
v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;
- policy
- p=reject
- subdomains
- sp=reject
- applies to
- 100% of mail
- reports
- mailto:dmarc_rua@emaildefense.proofpoint.com
- alignment
- adkim=r, aspf=r
DKIM
Keys found on 3 of 10 probed selectors:
MX
Notes on this configuration
include:%{ir}.%{v}.%{d}.spf.has.pphosted.com has no SPF record (void lookup)
Check it live
The above is a snapshot from 2026-08-04. Re-resolve it now: