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Allow configuring SRS secrets using the environment (#885)

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James 2018-03-08 15:51:10 -06:00 • committed by Johan Smits
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@ -505,3 +505,11 @@ Note: This postgrey setting needs `ENABLE_POSTGREY=1`
- **empty** => Envelope sender will be rewritten for all domains
- provide comma seperated list of domains to exclude from rewriting
##### SRS_SECRET
- **empty** => generated when the image is built
- provide a secret to use in base64 **(recommended)**
- you may specify multiple keys, comma separated. the first one is used for signing and the remaining will be used for verification. this is how you rotate and expire keys
- if you have a cluster/swarm make sure the same keys are on all nodes
- example command to generate a key: `dd if=/dev/urandom bs=24 count=1 2>/dev/null | base64`