Check for fullchain

src/freedombone-utils-web

         fi
 
         if [ ${#DEFAULT_DOMAIN_NAME} -gt 0 ]; then
-            if [ -f /etc/ssl/certs/${DEFAULT_DOMAIN_NAME}.pem ]; then
+            if [ -f /etc/letsencrypt/live/${DEFAULT_DOMAIN_NAME}/fullchain.pem ]; then
                 if [ -d /etc/dovecot ]; then
                     if ! grep -q "ssl_cert = </etc/letsencrypt/live/${DEFAULT_DOMAIN_NAME}/fullchain.pem" /etc/dovecot/conf.d/10-ssl.conf; then
                         sed -i "s|#ssl_cert =.*|ssl_cert = </etc/letsencrypt/live/${DEFAULT_DOMAIN_NAME}/fullchain.pem|g" /etc/dovecot/conf.d/10-ssl.conf