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Allow to configure SRS sender classes easily

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This will allow to forward safely any email from any host, no matter how strict their SPF policy is, by setting `SRS_SENDER_CLASSES=envelope_sender,header_sender`.

@Tecnativa TT20505
This commit is contained in:
Jairo Llopis
2019-12-03 13:33:51 +00:00
parent 2bb1a753e7
commit 42348ff353
3 changed files with 22 additions and 1 deletions
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README.md
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@ -660,6 +660,18 @@ Note: This postgrey setting needs `ENABLE_POSTGREY=1`
## SRS (Sender Rewriting Scheme)
##### SRS_SENDER_CLASSES
An email has an "envelope" sender (indicating the sending server) and a
"header" sender (indicating who sent it). More strict SPF policies may require
you to replace both instead of just the envelope sender.
[More info](https://www.mybluelinux.com/what-is-email-envelope-and-email-header/).
- **envelope_sender** => Rewrite only envelope sender address
- header_sender => Rewrite only header sender (not recommended)
- envelope_sender,header_sender => Rewrite both senders
##### SRS_EXCLUDE_DOMAINS
- **empty** => Envelope sender will be rewritten for all domains