Fixing certificate errors with cron

If you're seeing the error

TokenStore::Refresh: http error: error setting certificate verify locations: ...

Make a small bash script, I named mine fix_certs.sh

#!/bin/bash
mkdir -p /var/spool/postfix/etc/ssl/certs
cp /etc/ssl/certs/ca-certificates.crt /var/spool/postfix/etc/ssl/certs/ca-certificates.crt

# and if you're using postmulti add multiple instances.
mkdir -p /var/spool/postfix-2/etc/ssl/certs
cp /etc/ssl/certs/ca-certificates.crt /var/spool/postfix-2/etc/ssl/certs/ca-certificates.crt

Make the script executable with chmod +x

$ sudo chmod +x fix_certs.sh

Run it as often as you'd like with cron.