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scripts: add wrapper to update Postfix configuration safely (#3484)

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The new function can

1. update/append
2. update/prepend
3. initialize if non-existent

options in `/etc/postfix/main.cf` in a safe and secure manner. When the
container is improperly restarted, the option is not applied twice.

---

Co-authored-by: Casper <casperklein@users.noreply.github.com>
Co-authored-by: Brennan Kinney <5098581+polarathene@users.noreply.github.com>
This commit is contained in:
Georg Lauterbach 2023-08-22 10:03:41 +02:00 • committed by GitHub
parent 758fd9c913
commit cf9eb8278a
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6 changed files with 55 additions and 16 deletions
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2
target/scripts/helpers/relay.sh
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@ -173,7 +173,7 @@ function _setup_relayhost() {
_log 'debug' 'Setting up Postfix Relay Hosts'
if [[ -n ${DEFAULT_RELAY_HOST} ]]; then
_log 'trace' "Setting default relay host ${DEFAULT_RELAY_HOST} to /etc/postfix/main.cf"
_log 'trace' "Setting default relay host ${DEFAULT_RELAY_HOST}"
postconf "relayhost = ${DEFAULT_RELAY_HOST}"
fi