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added sieve example for subaddress sorting (#2410)

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Moritz Poldrack 2022-02-17 17:32:21 +01:00 committed by GitHub
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docs/content/config/advanced/mail-sieve.md
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@ -61,6 +61,23 @@ pipe "external-program";
For more examples or a detailed description of the Sieve language have a look at [the official site](http://sieve.info/examplescripts). Other resources are available on the internet where you can find several [examples](https://support.tigertech.net/sieve#sieve-example-rules-jmp).
## Automatic Sorting Based on Subaddresses
It is possible to sort subaddresses such as `user+mailing-lists@example.com` into a corresponding folder (here: `INBOX/Mailing-lists`) automatically.
```sieve
require ["envelope", "fileinto", "mailbox", "subaddress", "variables"];
if envelope :detail :matches "to" "*" {
set :lower :upperfirst "tag" "${1}";
if mailboxexists "INBOX.${1}" {
fileinto "INBOX.${1}";
} else {
fileinto :create "INBOX.${tag}";
}
}
```
## Manage Sieve
The [Manage Sieve](https://doc.dovecot.org/admin_manual/pigeonhole_managesieve_server/) extension allows users to modify their Sieve script by themselves. The authentication mechanisms are the same as for the main dovecot service. ManageSieve runs on port `4190` and needs to be enabled using the `ENABLE_MANAGESIEVE=1` environment variable.