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...my case there was at least a 30% reduction in space but I had too many errors - admittedly it's been a couple years since I last tried it. -- Daniel -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://dovecot.org/pipermail/dovecot/attachments/20190424/7a5694c4/attachment.html>

Hi, I use sis to deduplicate attachments, here is my `doveconf -n` ------------ auth_cache_size = 10 M auth_failure_delay = 5 secs auth_mechanisms = plain login auth_socket_path = /var/run/dovecot/auth-userdb auth_ssl_username_from_cert = yes auth_username_format = %Ln default_vsz_limit = 512 M lmtp_rcpt_check_quota = yes mail_attachment_detection_options = add-flags-on-save mail_attachment_dir =