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- spelling corrections
 - minor grammar changes.
This commit is contained in:
Adam Ward
2022-07-26 17:33:39 +08:00
parent e50f6c58c0
commit c423eabc07
14 changed files with 139 additions and 88 deletions
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docs/maintain.rst
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@@ -31,7 +31,7 @@ Docker is able to forward logs to multiple log engines. Read the following docum
.. _external_certs:
Managing of external Let's encrypt certificates
Managing of external Let's Encrypt certificates
-----------------------------------------------
When you are not using the embedded ``letsencrypt`` option from Mailu,
@@ -59,11 +59,14 @@ And the certbot command you will use in crontab would look something like:
Migrating an instance
---------------------
The SMTP protocol has an embedded retry mechanism and multiple MX that can serve a single domain, so that most migration processes or maintenance processes do not require any specific care.
The SMTP protocol has an embedded retry mechanism and multiple MX that can serve a single domain, so that most migration processes
or maintenance processes do not require any specific care.
Mailu relies heavily on files for storing everything, which helps the migration process, that can be performed based on file synchronization.
The suggested migration process consists of setting up a new backup server that drops incoming emails (Mailu not started), synchronizing both servers, stopping the main server and launching the backup server. Then, the backup server is switched as a main MX and the old server is deleted.
The suggested migration process consists of setting up a new backup server that drops incoming emails (Mailu not started),
synchronizing both servers, stopping the main server and launching the backup server. Then, the backup server is switched
as a main MX and the old server is deleted.
1. Prepare your new server, copy your ``docker-compose.yml``, ``.env`` and basic configuration files to the server, so that it is ready to start configuration Mailu, *do not start Mailu*
2. Setup your DNS so that the backup server is an additional, deprioritized MX for the domain; this can be complex if you serve many domains, in which case you can simply accept that some remote MX will retry for a couple of minutes, skip this step