I’m currently using about 9 different LetsEncrypt certificates on my Synology nas and wasn’t sure if they auto renewed or if I would have to manually renew them.
After some hunting around the web I came across a way to kick off the renewal process for the certificates. SSH into your box and run the below code.
/usr/syno/sbin/syno-letsencrypt renew-all
Some people have stated that the nas box automatically renews the certificates where some people have said it hasn’t.
Time will tell in 3 months when mine are due to expire.