| `NC_DISABLE_CACHE` | Disable cache. To be used only while debugging. If `true`, meta data is fetched from database instead of redis/cache. | Defaults to `false`. |
| `NC_SMTP_FROM` | E-mail sender address for SMTP plugin. | *SMTP plugin is disabled if this variable is not set.* |
| `NC_SMTP_HOST` | E-mail server hostname for SMTP plugin. | *SMTP plugin is disabled if this variable is not set.* |
| `NC_SMTP_PORT` | E-mail server network for SMTP plugin. | *SMTP plugin is disabled if this variable is not set.* |
@ -65,7 +67,6 @@ The following table lists all the environment variables that can be set to confi
| `NC_MAX_ATTACHMENTS_ALLOWED` | Maximum number of attachments per cell. | Defaults to `10`. |
| `NC_SECURE_ATTACHMENTS` | Allow accessing attachments only through pre-signed URLs. Set to `true` to enable, any other value is treated as `false`. (⚠ this will make existing links inaccessible ⚠) | Defaults to `false`. |
| `NC_ATTACHMENT_EXPIRE_SECONDS` | Number of seconds after which pre-signed attachment URLs will begin to expire. The URLs will expire after `NC_ATTACHMENT_EXPIRE_SECONDS` plus 10 minutes at the very latest. | Defaults to `7200` (2 hours). |
| `NC_AUTOMATION_LOG_LEVEL` | Possible Values: `OFF`, `ERROR`, `ALL`. See [Webhooks](/automation/webhook/create-webhook#call-log) for details. | Defaults to `OFF`. |
| `NC_ALLOW_LOCAL_HOOKS` | ⚠ Allow webhooks to call local links, which can raise security issues. ⚠ Set to `true` to enable, any other value is treated as `false` | Defaults to `false`. |
| `NC_SANITIZE_COLUMN_NAME` | Sanitize the column name during column creation. Set to `true` to enable, any other value is treated as `false` | Defaults to `true`. |