Zoho Mail (EU) email authentication
Zoho Mail accounts provisioned in the European data centre use a separate include.
SPF record
Add Zoho Mail (EU) to your domain's SPF record with this include:
include:zoho.eu
A complete record for a domain sending only through Zoho Mail (EU):
v=spf1 include:zoho.eu ~all
What it costs you
2 of your 10 DNS lookups. The include: itself costs one, and Zoho Mail (EU)'s record chains to 1 more.
Behind it are 10 IP ranges.
Live record
This is what zoho.eu published when this page was generated:
v=spf1 include:spf.zoho.eu -all
DKIM
Enable DKIM inside Zoho Mail (EU) and publish the selector record it generates. DKIM matters more than SPF for deliverability, because a DKIM signature survives forwarding while SPF does not — see how selectors work.
DMARC
Neither SPF nor DKIM protects the address your recipients actually see until DMARC ties them
to it. Once Zoho Mail (EU) is authenticating, publish a DMARC record — start at
p=none with a reporting address and
tighten from there.
Check it worked
DNS changes take minutes to hours to propagate. Once published, run the domain through the checker — it resolves the full include chain and reports the real lookup count.