Synchronizing Dynamic Distribution Lists
If you have set up a Dynamic Distribution List in Microsoft Exchange, the default mail synchronization filter does not synchronize the email address of this list. If you want to include the address of a Dynamic Distribution List in your synchronization, change your mail synchronization filter to:
(|(&(mailnickname=*)(objectCategory=person)(objectClass=user))(objectCategory=group)(objectClass=msExchDynamicDistributi onList))
Note that “(objectClass=msExchDynamicDistributionList)” has been added into the “or” part of the filter.