Trend Micro Email Security email authentication
Trend Micro’s hosted email gateway.
SPF record
Add Trend Micro Email Security to your domain's SPF record with this include:
include:spf.tmes.trendmicro.com
A complete record for a domain sending only through Trend Micro Email Security:
v=spf1 include:spf.tmes.trendmicro.com ~all
What it costs you
3 of your 10 DNS lookups. The include: itself costs one, and Trend Micro Email Security's record chains to 2 more.
Behind it are 31 IP ranges.
Live record
This is what spf.tmes.trendmicro.com published when this page was generated:
v=spf1 ip4:18.208.22.64/26 ip4:18.208.22.128/25 ip4:18.185.115.128/26 ip4:18.185.115.0/25 ip4:13.238.202.0/25 ip4:13.238.202.128/26 ip4:18.176.203.128/25 ip4:13.213.174.128/25 ip4:18.177.156.0/25 ip4:13.213.220.0/25 include:spfb.tmes.trendmicro.com ~all
Domains using Trend Micro Email Security
Found while resolving 293 well-known domains on 2026-08-04 — each authorises
spf.tmes.trendmicro.com in its published SPF record:
DKIM
Enable DKIM inside Trend Micro Email Security 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 Trend Micro Email Security 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.