Add a variable value check
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@ -805,7 +805,9 @@ if [ "${MAIL_SERVER_ENABLED}" == "true" ]; then
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if check_ip_is_internal $DOCKER_APP_SUBNET $MAIL_SERVER_API_HOST; then
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SENDER_IP=$(hostname -i);
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echo "$(dig +short myip.opendns.com @resolver1.opendns.com) $MAIL_DOMAIN_NAME" >> /etc/hosts
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if [[ -n ${MAIL_DOMAIN_NAME} ]]; then
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echo "$(dig +short myip.opendns.com @resolver1.opendns.com) ${MAIL_DOMAIN_NAME}" >> /etc/hosts
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fi
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elif [[ "$(dig +short myip.opendns.com @resolver1.opendns.com)" =~ $VALID_IP_ADDRESS_REGEX ]]; then
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SENDER_IP=$(dig +short myip.opendns.com @resolver1.opendns.com);
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log_debug "External ip $SENDER_IP is valid";
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