I'm using RUT360 with RUT36X_R_00.02.06.1.
Every time the RUT checks for new emails there is a cron error.
cron.err crond: USER root pid 25356 cmd lua /usr/bin/email_to_sms read
Is this critical? I had to do a factory reset once already after a firmware update. After the reset I set up Gmail as the POP3 server, but the email to sms service stopped sending SMS after a week. It started working again after I changed the POP3 server to a private IP adress, but the cron error stayed.