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Add note on redirect for ACME http challenge #2767

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1 change: 1 addition & 0 deletions docs/configuration/acme.md
Original file line number Diff line number Diff line change
Expand Up @@ -142,6 +142,7 @@ entryPoint = "https"
!!! note
If `TLS-SNI-01` challenge is used, `acme.entryPoint` has to be reachable by Let's Encrypt through the port 443.
If `HTTP-01` challenge is used, `acme.httpChallenge.entryPoint` has to be defined and reachable by Let's Encrypt through the port 80.
The redirection is fully compatible with the HTTP-01 challenge. You can use redirection with HTTP-01 challenge without problem.
These are Let's Encrypt limitations as described on the [community forum](https://community.letsencrypt.org/t/support-for-ports-other-than-80-and-443/3419/72).

### `storage`
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