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I'm trying to compress my incoming Maildir-formatted mail. My server is Ubuntu 14.04 LTS.

In /etc/dovecot/conf.d/10-mail.conf:

mail_plugins = $mail_plugins zlib

In /etc/dovecot/conf.d/90-plugin.conf:

plugin { zlib_save_level = 9 zlib_save = lz4 }

The dovecot log says:

Error: zlib_save: Unknown handler: lz4

I have installed the following packages in an attempt to remedy this: apt-get install liblz4-1 liblz1 liblz4-dev liblz4-tool liblz-dev lzma libwrap0

GDorn
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1 Answers1

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Dovecot added support for lz4 compression in v2.2.11. Ubuntu 14.04's version is v2.2.9.

https://www.dovecot.org/list/dovecot-news/2014-February/000269.html

GDorn
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