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Docker Mailserver
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Custom User Changes & Patches | Scripting
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docker-mailserver
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Examples
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GHCR
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Docker Mailserver
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docker-mailserver
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Configuration
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Configuration
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Your Best Friend setup.sh
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User Management
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User Management
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Accounts
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Aliases
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Best Practices
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Best Practices
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DKIM
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DMARC
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SPF
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Auto-discovery
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Security
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Mail Encryption
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Mail Delivery with POP3
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Advanced Configuration
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Modifications via Script
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Email Forwarding
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< svg xmlns = "http://www.w3.org/2000/svg" viewBox = "0 0 24 24" > < path d = "M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z" / > < / svg >
< / a >
< h1 > Modifications via Script< / h1 >
< p > If you'd like to change, patch or alter files or behavior of < code > docker-mailserver< / code > , you can use a script.< / p >
< p > In case you cloned this repository, you can copy the file < code > user-patches.sh.dist< / code > under < code > config/< / code > with < code class = "highlight" > cp config/user-patches.sh.dist config/user-patches.sh< / code > in order to create the < code > user-patches.sh< / code > script. In case you are managing your directory structure yourself, create a < code > config/< / code > directory and the < code > user-patches.sh< / code > file yourself.< / p >
< div class = "highlight" > < pre > < span > < / span > < code > < span class = "c1" > # 1. Either create the config/ directory yourself< / span >
< span class = "c1" > # or let docker-mailserver create it on initial< / span >
< span class = "c1" > # startup< / span >
~/somewhere $ mkdir config < span class = "o" > & & < / span > < span class = "nb" > cd< / span > config
< span class = "c1" > # 2. Create the user-patches.sh and edit it< / span >
~/somewhere/config $ touch user-patches.sh
~/somewhere/config $ vi user-patches.sh
< / code > < / pre > < / div >
< p > The contents could look like this< / p >
< div class = "highlight" > < pre > < span > < / span > < code > < span class = "ch" > #! /bin/bash< / span >
cat > /etc/amavis/conf.d/50-user < < < span class = "s2" > " END" < / span >
use strict< span class = "p" > ;< / span >
< span class = "nv" > $undecipherable_subject_tag< / span > < span class = "o" > =< / span > undef< span class = "p" > ;< / span >
< span class = "nv" > $admin_maps_by_ccat< / span > < span class = "o" > {< / span > +CC_UNCHECKED< span class = "o" > }< / span > < span class = "o" > =< / span > undef< span class = "p" > ;< / span >
< span class = "c1" > #------------ Do not modify anything below this line -------------< / span >
< span class = "m" > 1< / span > < span class = "p" > ;< / span > < span class = "c1" > # ensure a defined return< / span >
END
...
< / code > < / pre > < / div >
< p > And you're done. The user patches script runs right before starting daemons. That means, all the other configuration is in place, so the script can make final adjustments.< / p >
< div class = "admonition note" >
< p class = "admonition-title" > Note< / p >
< p > Many "patches" can already be done with the Docker Compose-/Stack-file. Adding hostnames to < code > /etc/hosts< / code > is done with the < code class = "highlight" > < span class = "nt" > extra_hosts< / span > < span class = "p" > :< / span > < / code > section, < code > sysctl< / code > commands can be managed with the < code class = "highlight" > < span class = "nt" > sysctls< / span > < span class = "p" > :< / span > < / code > section, etc.< / p >
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