Sophos Email receives mail for 5 of 9,971 popular domains we measured in November 2026. Below: the records it needs and how its customers actually set them.
MX hosts depend on the account's region, for example mx-01-us-west-2.prod.hydra.sophos.com.
Publish a TXT record at _dmarc.<domain> once SPF and DKIM pass for all mail you send, start with p=none and a reporting address, then move to p=quarantine or p=reject:
v=DMARC1; p=reject; rua=mailto:dmarc-reports@<domain>Provider site: https://www.sophos.com/
5 customer domains in the sample (accent bars) compared with all 9,971 measured domains (grey bars).
The highest-ranked domains in the sample whose MX records point to Sophos Email.
Check one yourself:
Customer-specific parts replaced by <domain> and digits by <n>.
| MX host pattern | Domains |
|---|---|
mx-<n>-eu-central-<n>.prod.hydra.sophos.com | 3 |
mx-<n>-eu-west-<n>.prod.hydra.sophos.com | 1 |
mx-<n>-us-west-<n>.prod.hydra.sophos.com | 1 |
Source: our own scan of November 2026 (2026-11-11), 9,971 of the top 10,000 domains of the Tranco list Y895G that answered in DNS. Method and data.