introduce variable to control Amavis' loglevel (#1947)

ENVIRONMENT.md

@@ -2,9 +2,8 @@
 
 ## Variables
 
-1. If an option doesn't work as documented here, check if you are running the latest image!
-2. Values in **bold** are the default values.
-3. Since `docker-mailserver v7.1.0`, comparisons for environment variables are executed differently. If you previously used `VARIABLE=''` as the `empty` value, **update** to now use `VARIABLE=`.
+1. Values in **bold** are the default values.
+2. If an option doesn't work as documented here, check if you are running the latest image. The current `master` branch corresponds to the image `mailserver/docker-mailserver:edge`.
 
 ### Assignments
 
@@ -34,6 +33,15 @@ Amavis content filter (used for ClamAV & SpamAssassin)
 - 0     => Amavis is disabled
 - **1** => Amavis is enabled
 
+##### AMAVIS_LOGLEVEL
+
+[This page](https://lists.amavis.org/pipermail/amavis-users/2011-March/000158.html) provides information on Amavis' logging statistics.
+
+- -1/-2/-3 => Only show errors
+- **0**    => Show warnings
+- 1/2      => Show default informational output
+- 3/4/5    => log debug information (very verbose)
+
 ##### ENABLE_CLAMAV
 
 - **0** => Clamav is disabled

docs/content/config/advanced/override-defaults/user-patches.md

@@ -22,8 +22,6 @@ The contents could look like this
 ``` sh
 #! /bin/bash
 
-sed -i -E 's|(log_level).*|\1 = -1;|g' /etc/amavis/conf.d/49-docker-mailserver
-
 cat >/etc/amavis/conf.d/50-user << "END"
 use strict;
 

mailserver.env

@@ -69,6 +69,12 @@ ENABLE_CLAMAV=0
 # 1 => Enabled
 ENABLE_AMAVIS=1
 
+# -1/-2/-3 => Only show errors
+# **0**    => Show warnings
+# 1/2      => Show default informational output
+# 3/4/5    => log debug information (very verbose)
+AMAVIS_LOGLEVEL=0
+
 # If you enable Fail2Ban, don't forget to add the following lines to your `docker-compose.yml`:
 #    cap_add:
 #      - NET_ADMIN

target/scripts/start-mailserver.sh

@@ -16,6 +16,7 @@ declare -a FUNCS_SETUP FUNCS_FIX FUNCS_CHECK FUNCS_MISC DAEMONS_START
 # ? >> Setup of default and global values / variables
 # ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
 
+VARS[AMAVIS_LOGLEVEL]="${AMAVIS_LOGLEVEL:=0}"
 VARS[DEFAULT_RELAY_HOST]="${DEFAULT_RELAY_HOST:=}"
 VARS[DMS_DEBUG]="${DMS_DEBUG:=0}"
 VARS[DOVECOT_MAILBOX_FORMAT]="${DOVECOT_MAILBOX_FORMAT:=maildir}"

target/scripts/startup/setup-stack.sh

@@ -1501,6 +1501,10 @@ function _setup_security_stack
     then
       cp /tmp/docker-mailserver/amavis.cf /etc/amavis/conf.d/50-user
     fi
+
+    sed -i -E \
+      "s|(log_level).*|\1 = ${AMAVIS_LOGLEVEL};|g" \
+      /etc/amavis/conf.d/49-docker-mailserver
   fi
 }
 

test/mail_disabled_clamav_spamassassin.bats

@@ -17,6 +17,7 @@ setup_file() {
 		  -e ENABLE_CLAMAV=0 \
 		  -e ENABLE_SPAMASSASSIN=0 \
 		  -e DMS_DEBUG=0 \
+		  -e AMAVIS_LOGLEVEL=2 \
 		  -h mail.my-domain.com -t "${NAME}"
     # TODO: find a better way to know when we have waited long enough
     #       for clamav to should have come up, if it were enabled

test/tests.bats

@@ -25,6 +25,7 @@ setup_file() {
 		-e SA_TAG=-5.0 \
 		-e SA_TAG2=2.0 \
 		-e SA_KILL=3.0 \
+		-e AMAVIS_LOGLEVEL=2 \
 		-e SA_SPAM_SUBJECT="SPAM: " \
 		-e VIRUSMAILS_DELETE_DELAY=7 \
 		-e ENABLE_SRS=1 \