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4,1 KiB
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93 Zeilen
Kein EOL
4,1 KiB
Markdown
If you want to delete old mails out of the `.Junk` or `.Trash` folders or maybe delete all read mails that are older than a certain amount of time you may use dovecot's tool doveadm [man doveadm-expunge](https://wiki.dovecot.org/Tools/Doveadm/Expunge).
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## The manual way
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That said, let's dive in:
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Delete a user's mails inside the junk folder that **are read** and **older** than 4 hours
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```
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docker compose exec dovecot-mailcow doveadm expunge -u 'mailbox@example.com' mailbox 'Junk' SEEN not SINCE 4h
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```
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Delete **all** user's mails in the junk folder that are **older** than 7 days
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```
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docker compose exec dovecot-mailcow doveadm expunge -A mailbox 'Junk' savedbefore 7d
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```
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Delete **all** mails (of all users) in **all** folders that are **older** than 52 weeks (internal date of the mail, not the date it was saved on the system => `before` instead of `savedbefore`). Useful for deleting very old mails on all users and folders (thus especially useful for GDPR-compliance).
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```
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docker compose exec dovecot-mailcow doveadm expunge -A mailbox % before 52w
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```
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Delete mails inside a custom folder **inside** a user's inbox that are **not** flagged and **older** than 2 weeks
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```
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docker compose exec dovecot-mailcow doveadm expunge -u 'mailbox@example.com' mailbox 'INBOX/custom-folder' not FLAGGED not SINCE 2w
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```
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!!! info
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For possible [time spans](https://wiki.dovecot.org/Tools/Doveadm/SearchQuery#section_date_specification) or [search keys](https://wiki.dovecot.org/Tools/Doveadm/SearchQuery#section_search_keys) have a look at [man doveadm-search-query](https://wiki.dovecot.org/Tools/Doveadm/SearchQuery)
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## Job scheduler
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### via the host system cron
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If you want to automate such a task you can create a cron job on your host that calls a script like the one below:
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```
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#!/bin/bash
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# Path to mailcow-dockerized, e.g. /opt/mailcow-dockerized
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cd /path/to/your/mailcow-dockerized
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/usr/local/bin/docker compose exec -T dovecot-mailcow doveadm expunge -A mailbox 'Junk' savedbefore 2w
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/usr/local/bin/docker compose exec -T dovecot-mailcow doveadm expunge -A mailbox 'Junk' SEEN not SINCE 12h
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[...]
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```
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To create a cron job you may execute `crontab -e` and insert something like the following to execute a script:
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```
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# Execute everyday at 04:00 A.M.
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0 4 * * * /path/to/your/expunge_mailboxes.sh
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```
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### via Docker job scheduler
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To archive this with a docker job scheduler use this docker-compose.override.yml with your mailcow:
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```
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version: '2.1'
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services:
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ofelia:
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image: mcuadros/ofelia:latest
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restart: always
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command: daemon --docker
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volumes:
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- /var/run/docker.sock:/var/run/docker.sock:ro
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network_mode: none
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dovecot-mailcow:
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labels:
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- "ofelia.enabled=true"
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- "ofelia.job-exec.dovecot-expunge-trash.schedule=0 4 * * *"
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- "ofelia.job-exec.dovecot-expunge-trash.command=doveadm expunge -A mailbox 'Junk' savedbefore 2w"
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- "ofelia.job-exec.dovecot-expunge-trash.tty=false"
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```
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The job controller just need access to the docker control socket to be able to emulate the behavior of "exec". Then we add a few label to our dovecot-container to activate the job scheduler and tell him in a cron compatible scheduling format when to run. If you struggle with that schedule string you can use [crontab guru](https://crontab.guru/).
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This docker-compose.override.yml deletes all mails older then 2 weeks from the "Junk" folder every day at 4 am. To see if things ran proper, you can not only see in your mailbox but also check Ofelia's docker log if it looks something like this:
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```
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common.go:124 â–¶ NOTICE [Job "dovecot-expunge-trash" (8759567efa66)] Started - doveadm expunge -A mailbox 'Junk' savedbefore 2w,
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common.go:124 â–¶ NOTICE [Job "dovecot-expunge-trash" (8759567efa66)] Finished in "285.032291ms", failed: false, skipped: false, error: none,
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```
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If it failed it will say so and give you the output of the doveadm in the log to make it easy on you to debug.
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In case you want to add more jobs, ensure you change the "dovecot-expunge-trash" part after "ofelia.job-exec." to something else, it defines the name of the job. Syntax of the labels you find at [mcuadros/ofelia](https://github.com/mcuadros/ofelia). |