- Plesk 12.5 for Linux
When configuring outgoing mail controls for Plesk at a subscription level, the outgoing mail limits are not enforced.
Therefore, scripts that are using php's
Allow users and scripts to use Sendmail option enabled server-wide in Tools & Settings > Mail Server Settings
If it is enabled, scripts are allowed to use
binary) even if the limits for a mailbox and domain are exceeded.
Deselect the aforementioned checkbox in Tools & Settings > Mail Server Settings .