Create v-blacklist-email-account

bin/v-blacklist-email-account

@@ -0,0 +1,102 @@
+#!/bin/bash
+# info: Add a specific email address to exim4 and spamassassin blacklist
+# usage: v-blacklist-email-account EMAIL
+
+#----------------------------------------------------------#
+#                    Variable&Function                     #
+#----------------------------------------------------------#
+
+whoami=$(whoami)
+if [ "$whoami" != "root" ]; then
+    echo "You must be root to execute this script"
+    exit 1
+fi
+
+# Importing system environment
+source /etc/profile
+
+# Determine Debian version and set SpamAssassin service name
+release=$(cat /etc/debian_version | tr "." "\n" | head -n1)
+if [ "$release" -lt 12 ]; then
+    SPAMD_SERVICE="spamassassin.service"
+else
+    SPAMD_SERVICE="spamd.service"
+fi
+
+DENY_SENDERS_FILE="/etc/exim4/deny_senders"
+SPAMASSASSIN_FILE="/etc/spamassassin/local.cf"
+
+# Flags to track changes
+SPAMASSASSIN_CHANGED=false
+
+# Function to check if an entry already exists in a file
+check_entry_exists() {
+    local entry=$1
+    local file=$2
+    grep -qF "$entry" "$file"
+}
+
+# Function to add an entry to a file
+add_entry_to_file() {
+    local entry=$1
+    local file=$2
+    echo "$entry" >> "$file"
+}
+
+# Display usage if no arguments are provided
+if [ $# -lt 1 ]; then
+    echo "Usage: v-blacklist-email EMAIL"
+    exit 1
+fi
+
+#----------------------------------------------------------#
+#                       Action                             #
+#----------------------------------------------------------#
+
+EMAIL=$1
+
+# Validate email format
+if [[ ! "$EMAIL" =~ ^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$ ]]; then
+    echo "Invalid email address format."
+    exit 1
+fi
+
+# Prepare entries for Exim4 and SpamAssassin
+EXIM_ENTRY="$EMAIL"
+SPAMASSASSIN_ENTRY="blacklist_from $EMAIL"
+
+#----------------------------------------------------------#
+#                   Exim4 Blacklist                        #
+#----------------------------------------------------------#
+
+echo "Updating $DENY_SENDERS_FILE..."
+if ! check_entry_exists "$EXIM_ENTRY" "$DENY_SENDERS_FILE"; then
+    add_entry_to_file "$EXIM_ENTRY" "$DENY_SENDERS_FILE"
+    echo "Added $EXIM_ENTRY to $DENY_SENDERS_FILE."
+else
+    echo "$EXIM_ENTRY already exists in $DENY_SENDERS_FILE."
+fi
+
+#----------------------------------------------------------#
+#                SpamAssassin Blacklist                    #
+#----------------------------------------------------------#
+
+echo "Updating $SPAMASSASSIN_FILE..."
+if ! check_entry_exists "$SPAMASSASSIN_ENTRY" "$SPAMASSASSIN_FILE"; then
+    add_entry_to_file "$SPAMASSASSIN_ENTRY" "$SPAMASSASSIN_FILE"
+    echo "Added $SPAMASSASSIN_ENTRY to $SPAMASSASSIN_FILE."
+    SPAMASSASSIN_CHANGED=true
+else
+    echo "$SPAMASSASSIN_ENTRY already exists in $SPAMASSASSIN_FILE."
+fi
+
+if [ "$SPAMASSASSIN_CHANGED" == "true" ]; then
+    systemctl restart "$SPAMD_SERVICE"
+    echo "SpamAssassin service ($SPAMD_SERVICE) restarted."
+fi
+
+#----------------------------------------------------------#
+#                       Done                               #
+#----------------------------------------------------------#
+
+exit 0