Quarantine mailbox and MS Exchange quarantine

If you decide not to use Local quarantine you have two options, either Quarantine mailbox or MS Exchange quarantine. Whichever option you choose, you need to create dedicated user with a mailbox (for example, main_quarantine@company.com) which will then be used to store quarantined email messages. This user and mailbox will also be used by Mail Quarantine manager to view and manage items in the quarantine. You will need to specify account details of this user in Quarantine manager settings.


The advantage of using Quarantine mailbox/MS Exchange quarantine over Local quarantine is that mail quarantine items are managed from one place regardless of how many servers with Hub Transport Server role. Unlike Local quarantine, Quarantine mailbox/MS Exchange quarantine, SPAM and quarantined email messages are stored within Exchange mailbox database(s). Anyone with access to the quarantine mailbox can manage quarantined messages.

When comparing Quarantine mailbox and MS Exchange quarantine, both options use a dedicated mailbox as an underlying mechanism for storing quarantined messages, but they differ slightly in the way how email messages are delivered to the mailbox. Quarantine mailbox vs MS Exchange quarantine:

Quarantine mailbox

ESET Mail Security creates a separate wrapper email with additional information and the original emails as an attachment and delivers it to the mailbox.

Specify message quarantine address (for example, main_quarantine@company.com).


We do not recommend you using the Administrator user account as the quarantine mailbox.

MS Exchange quarantine

Exchange Server is responsible for delivering the email to the mailbox itself. The mailbox must be set as a Quarantine at the organization level in the Active Directory (by a PowerShell command listed below).


By default, internal quarantine is not activated within Microsoft Exchange Server. Unless you have it activated, open Exchange Management Shell and type in following command (replace Name@domain.com with an actual address of your dedicated mailbox):

Set-ContentFilterConfig -QuarantineMailbox name@domain.com

ESET Mail Security uses Microsoft Exchange quarantine system (this applies to Microsoft Exchange Server 2007 and newer). In this case, the Exchange's internal mechanism is used to store potentially infected messages and SPAM.