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# YAMN Nym sender
This binary sends an already encrypted YAMN envelope through the Nym mixnet
using the Rust SDK. It is intentionally send-only: it does not receive
messages, expose replies, fetch remailer data, or perform YAMN encoding.
Configuration is supplied through the environment:
- `YAMN_NYM_RECIPIENT`: fixed Nym address of the YAMN ingress service.
- `YAMN_ENTRY_ADDRESS`: exact allowlisted YAMN entry address used by the ingress.
- `YAMN_NYM_STORAGE`: persistent client storage directory. Defaults to
`/var/lib/yamnweb/nym-client`.
The request is one JSON object on standard input:
```json
{"entry_address":"yamn@example.org","payload":"<raw encrypted YAMN SMTP envelope>"}
```
The binary never logs the request or its contents. The Nym recipient must be
an ingress service that knows how to hand the envelope to YAMN. A normal SMTP
address is not a valid replacement for `YAMN_NYM_RECIPIENT`.
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