Exchange - Mail.que utilizing more space - Exchange Drive - Out of Space
The Mail.que database file in Exchange Servers increases drastically after a point of time is an expected behavior, below are the possible reasons for them. Data stored in Mail.que file : Email message live traffic Shadow queue Emails pending for delivery & Submission queue Use the below path to reach the mail.que database file, Note: It is highly advisable to exclude this path from AntiVirus scanning. %ExchangeInstallPath%\TransportRoles\data\Queue Mail.que utilizing high space : Emails in queue due to sudden flooding during peak business hours or unavailability of other Exchange server Increased message expiration time, nethold time. The cmdlets to re-configure these values are in below article Note: The mail.que database file will not shrink, however during the online maintenance WhiteSpace will be accumulated which could be used for future emails How to re-create Mail.que database file? Re-creating the mail.que database file will not harm your Exchange server...