If anti-spam detects an e-mail as not definitely categorized as clean, it moves the e-mail to the "Temporary Quarantine" for 50 minutes to re-scan it with updated anti-spam databases. 

If upon after this 50 minutes' time the e-mail is not defined as spam, it is released automatically without any interaction with the user. 

The administrator has an option to manually release such e-mails from "Temporary Quarantine" before the 50 minute period ends. At the same time, the e-mail will remain in quarantine with the status "Released".