[Helper] Fix expiry-dates.sh

helper-scripts/expiry-dates.sh

@@ -8,5 +8,5 @@ DOVECOT=$(echo | openssl s_client -connect ${MAILCOW_HOSTNAME}:143 -starttls ima
 NGINX=$(echo | openssl s_client -connect ${MAILCOW_HOSTNAME}:443 2>/dev/null | openssl x509 -inform pem -noout -enddate | cut -d "=" -f 2)
 echo TLS expiry dates:
 echo Postfix: ${POSTFIX}
-echo Dovecot: ${POSTFIX}
-echo Nginx: ${POSTFIX}
+echo Dovecot: ${DOVECOT}
+echo Nginx: ${NGINX}