2

I activate compression plugin by set following on Dovecot:

# /etc/dovecot/conf.d/20-imap.conf
(...)
protocol imap {
  mail_plugins = $mail_plugins zlib
}

# /etc/dovecot/conf.d/90-plugin.conf
(...)
plugin {
  zlib_save_level = 6
  zlib_save = gz
}

Restarted but maildir file seem not compressed :

# file  1578950990.12797_0.host.xxx.xxx:2,
1578950990.12797_0.host.xxx.xxx:2,: SMTP mail, ASCII text, with very long lines
  1. there is an error to use gzip compression on email ?
  2. how to compress existing emails from server ?

Found : https://gist.github.com/cviebrock/e37f80a3223dfee19051c936c5ebe509

Server : dovecot 2.2.33.2 Ubuntu 18LTS

Thanks for help

Mike Castro Demaria
  • 131

1 Answers1

2

You have made dovecot capable to read compressed files in maildir directory.

As I understand you need separate tweaks to compress (old) uncompressed messages.

https://doc.dovecot.org/configuration_manual/zlib_plugin/#compression

You’ll probably want to use some cronjob to compress old mails. […]

AnFi
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