We just discovered that our resellers webmail was not working after updating to v12 and we had already applied the fix mentioned by Adam about the central webmail not working Adam
I believe that fix also needs to be applied to the Reseller webmail installations as well. As you can't edit their config files through the file manager you need to find the webmail installation for each Reseller on the control panel server and then edit the config located at /var/www/xxxxxxxxx/public_html/config/config.inc.php where xxxxxxxxx is the webmail GUID.
To make this easy and update them all in 1 go we ran the following commands.
WARNING - these commands are provided to help you and should not be run without understanding what they are doing. I accept no responsibility for anything that might go wrong.
First, see what they are currently set to and how many we need to update:
find /var/www/*/public_html/config/ -name "config.inc.php" -type f | xargs cat | grep orchd_key
Then using the key we obtained from Adams instructions we ran the following command to update them all, substituting old_orchd_key with the original key that is in the config file and new_orchd_key with the orchd key:
find /var/www/*/public_html/config/ -name "config.inc.php" -type f -exec sed -i 's/old_orchd_key/new_orchd_key/g' {} +
This worked for us but it might not work for you
