In dynamic distribution groups, membership is determined by the results of an LDAP query. We can create a distribution groups by using Cmdlets as shown below: Syntax:  New-DynamicDistributionGroup -Name ExchangeName  –IncludedRecipients <None, UserMail, MailContacts, MailGroups, Resources,  AllRecipients> [-Alias ExchangeAlias]  [-DisplayName DisplayName] [-OrganizationalUnit OUName]  [-ConditionalCompany CompanyNameFilter1, CompanyNameFilter2,…]  [-ConditionalCustomAttributeX Value1, Value2,…]  [-ConditionalDepartment DeptNameFilter1, DeptNameFilter2, … ]  [-ConditionalStateOrProvince StateNameFilter1, StateNameFilter2, …]  [-RecipientContainer ApplyFilterContainer] {AddtlParams}  New-DynamicDistributionGroup -Name ExchangeName –RecipientFilter Filter  …