About trusted recipients

You can exclude messages addressed to specific recipients by specifying the addresses of these recipients in the list of trusted recipients. The list is empty by default.

You can add recipients' addresses to the list of trusted recipients in the form of entries of the following types:

• Active Directory objects:
  • User.
  • Contact.
  • Distribution Group.
  • Security Group.

  It is recommended to add addresses in the form of entries of this type.

• SMTP addresses in the mailbox@domain.com format.

  Entries of this type should be added when Anti-Virus is installed for the Hub Transport role or the address you want to exclude cannot be located in Active Directory.

  To exclude a public folder from scanning by Anti-Virus for the Hub Transport role, you should add all of its SMTP addresses (if there are several of them) to the list of trusted recipients. If any of the SMTP addresses of the public folder are not on the list, messages arriving in the public folder can be scanned by Anti-Virus.

• Display Name.

  Entries of this type should be added when Anti-Virus is installed for the Mailbox role or the address you want to exclude cannot be located in Active Directory.

• Public folders.

  Entries of this type should be added if Anti-Virus has been installed for the Mailbox role. Public folders cannot be selected from Active Directory. The full path to the public folder should be specified when adding such entries.

When Anti-Virus is installed for the Mailbox role and the Hub Transport role and the address you want to exclude cannot be located in Active Directory, the list of trusted recipients should include two entries corresponding to this address: SMTP address and user / group name. Otherwise, messages sent to this address will not be excluded from the scan.

Recipients' addresses specified in the form of Active Directory objects are excluded from the anti-virus scan according to the following rules:

• If the recipient's address is specified as a User or a Contact, messages addressed to this recipient are excluded from scanning.
• If the address is specified as a Distribution Group, messages addressed to this distribution group are excluded from the scan. However, messages addressed personally to individual distribution group members are not excluded from the scan unless their addresses have been added to the list separately.
• If the address is specified as a Security Group, messages addressed to this group and its members are excluded from the scan.

The application automatically updates user addresses received from Active Directory following changes to the relevant Active Directory accounts (for example, when a user's email address has changed or a new member has been added to a security group). This update is performed once a day.