#!/bin/bash
# Configuration
THRESHOLD=200 # Default queue threshold
CONFIG_FILE="/etc/exim-limits-alert"
EMAIL_RECIPIENT="sysadmin@sitioshispanos.com"
# Load threshold from configuration file if it exists
if [ -f "$CONFIG_FILE" ]; then
THRESHOLD=$(cat "$CONFIG_FILE")
fi
# Get system information
HOSTNAME=$(hostname)
# Get the current mail queue size
QUEUE_SIZE=$(exim -bpc)
# Get mail queue details
QUEUE_DETAILS=$(exim -bp)
# Exit if the queue size does not exceed the threshold
if [ "$QUEUE_SIZE" -le "$THRESHOLD" ]; then
exit 0
fi
# Get the list of "frozen" emails
FROZEN_IDS=$(exim -bp | awk '$6 == "frozen" {print $3}')
FROZEN_COUNT=$(echo "$FROZEN_IDS" | wc -l)
# Get the list of emails older than 24 hours
OLD_IDS=$(exim -bp | awk -v now=$(date +%s) '{
split($4, d, "-");
split($5, t, ":");
mail_time = mktime(d[3] " " d[2] " " d[1] " " t[1] " " t[2] " 00");
if ((now - mail_time) > 86400) print $3;
}')
OLD_COUNT=$(echo "$OLD_IDS" | wc -l)
# Remove frozen emails if any exist
if [ "$FROZEN_COUNT" -gt 0 ]; then
echo "$FROZEN_IDS" | xargs -I {} exim -Mrm {}
FROZEN_REMOVAL_SUMMARY="$FROZEN_COUNT frozen emails were removed."
else
FROZEN_REMOVAL_SUMMARY="No frozen emails were found."
fi
# Remove emails older than 24 hours if any exist
if [ "$OLD_COUNT" -gt 0 ]; then
echo "$OLD_IDS" | xargs -I {} exim -Mrm {}
OLD_REMOVAL_SUMMARY="$OLD_COUNT emails older than 24 hours were removed."
else
OLD_REMOVAL_SUMMARY="No emails older than 24 hours were found."
fi
# Send report
REPORT="ALERT: The Exim queue on $HOSTNAME has $QUEUE_SIZE emails, exceeding the threshold of $THRESHOLD.
--- Mail Queue Details ---
$QUEUE_DETAILS
--- Removed Emails Summary ---
$FROZEN_REMOVAL_SUMMARY
$OLD_REMOVAL_SUMMARY
"
echo "$REPORT" | mail -s "Alert: Exim Queue on $HOSTNAME" "$EMAIL_RECIPIENT"
Mini Shell