This is the solution i made:
mail-test.sh resides in the dovecot container via a bind mount, and awaits to be called by mail-deliverability.sh
Add the following line to your docker-compose.yml :
...snip...
volumes:
- ./helper-scripts/mail-test.sh:/root/mail-test.sh:ro
...snip...
Add the following line to your crontab file (Runs every 3 hours):
0 */3 * * * <MAILCOW DIR>/helper-scripts/mail-deliverability.sh
Save the scripts to your helper-scripts dir in the mailcow folder.
mail-deliverability.sh >
#!/usr/bin/env bash
mailcow_dir="<MAILCOW DIR>/helper-scripts"
verify_uuid="/tmp/verify_uuid"
mail_format="+%y/%m/%d_%H:%M:%S::"
dovecot_c="<DOVECOT CONTAINER NAME>" # eg. mailcow_dovecot
domain="<YOUR DOMAIN>"
password="<TEST USER PASSWORD>"
echo "[*] Generating verification uuid in $verify_uuid..."
if cat /proc/sys/kernel/random/uuid | sed 's/[-]//g' | head -c 20 > $verify_uuid; then
uuid=$(cat $verify_uuid)
echo "[+] Verify uuid [1/2] - $uuid"
if docker cp $verify_uuid $dovecot_c:/root/; then
echo "[*] Sending test mail..."
if curl -s --ssl-reqd --mail-from "test@$domain" \
--mail-rcpt "test@$domain" -T - \
--url "smtps://mail.$domain:465" \
--user "test@$domain:$password" \
<<< "$(date $mail_format) :: $uuid"; then
echo "[*] Sleeping 15 seconds..."
sleep 15
echo "[*] Checking if mail has been delivered..."
echo
if ! docker exec $dovecot_c /root/mail-test.sh; then
echo "[-] Unable to check if mail was delivered!"
fi
else
echo "[-] Test mail was not sent!"
exit 1
fi
rm $verify_uuid
else
echo "[-] Unable to copy verification uuid to $dovecot_c!"
exit 1
fi
else
echo "[-] Couldn't generate verification string at $verify_uuid!"
exit 1
fi
mail-test.sh >
#!/usr/bin/env bash
domain=<YOUR DOMAIN>
maildir="/var/vmail/$domain/test/Maildir/new"
latestMail=$(ls -Art $maildir | tail -n 1)
testfile="/root/test"
verify_uuid="/root/verify_uuid"
delete_older_than="8w"
if [ -s "$maildir"/"$latestMail" ]; then
cp "$maildir"/"$latestMail" $testfile
if [[ $(head -c7 "$testfile") == "CRYPTED" ]]; then
echo "[+] Expunging mail older than $delete_older_than..."
echo
if ! doveadm expunge -u test@$domain mailbox '*' before $delete_older_than; then
echo "[-] Unable to expunge old mail!"
fi
echo "[+] Found latest message, decrypting..."
echo
if doveadm fs get compress lz4:1:crypt:private_key_path=/mail_crypt/ecprivkey.pem:public_key_path=/mail_crypt/ecpubkey.pem:posix:prefix=/ "$testfile" > "$testfile".dec; then
echo "========== BEGIN MESSAGE =========="
cat "$testfile.dec"
echo "========== END MESSAGE =========="
echo
else
echo "[-] Unable to decrypt latest message!"
exit 1
fi
fi
uuid=$(cat $verify_uuid)
echo "[+] Verify uuid [2/2] - $uuid"
echo
if grep -q "$uuid" "$testfile".dec; then
echo "[+] E-mail is up and running."
ret=0
else
echo "[-] Message uuid verification failed!"
ret=1
fi
rm "$verify_uuid"
rm "$testfile"
rm "$testfile".dec
exit $ret
else
echo "[-] Latest mail not found!"
exit 1
fi