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Fix: System-MTA (Postfix/Exim) im LXC entfernen — Port-25-Konflikt

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Debian-Templates bringen oft Postfix mit (lauscht auf 25). Das blockierte
den docker-mailserver Container: Docker konnte 0.0.0.0:25 nicht binden ->
"failed programming external connectivity" -> Netzwerk-Setup kaputt ->
"Device eth0 does not exist" / Crash-Schleife. Jetzt werden postfix/exim4
beim Setup gestoppt + purged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Karim Gabriele Varano
2026-06-02 03:11:50 +02:00
parent be4906e2b5
commit 8739335f43
1 changed files with 4 additions and 0 deletions
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dms-lxc.sh
+4
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@@ -279,6 +279,10 @@ msg_info "Installiere Updates & Docker im Container ..."
pct exec "$CTID" -- bash -c ' pct exec "$CTID" -- bash -c '
set -e set -e
export DEBIAN_FRONTEND=noninteractive export DEBIAN_FRONTEND=noninteractive
# Debian-Templates bringen oft Postfix/Exim mit -> belegt Port 25 und bricht
# den Mailserver-Container (Port-Bind + Netzwerk-Setup). Daher entfernen.
systemctl disable --now postfix exim4 >/dev/null 2>&1 || true
apt-get purge -y -qq postfix "exim4*" >/dev/null 2>&1 || true
apt-get update -qq apt-get update -qq
apt-get install -y -qq ca-certificates curl gnupg openssl jq >/dev/null apt-get install -y -qq ca-certificates curl gnupg openssl jq >/dev/null
install -m 0755 -d /etc/apt/keyrings install -m 0755 -d /etc/apt/keyrings