Exchange路由代理-检查电子邮件地址是否为带有C＃的Exchange通讯组列表

Question

i'm tring to build a routing agent dll for exchange 2010, that will check if the recipient email address is an Exchange Distribution List. if it is, i want to get the email adresses that are part of the distribution list.

so basically i need two things:

1. query exchange to check if the email address is a simple mail or a D-group
2. get all distribution group email members.

i'm working on visual studio 2013 with c# , and new working with exchange, what is the namespace/package i should work with to do these things ?

thanks.

David.

Answer 1

1. You can use the AddressBook class to do that eg use https://msdn.microsoft.com/en-us/library/office/aa564676(v=exchg.150).aspx which will return https://msdn.microsoft.com/en-us/library/office/microsoft.exchange.data.transport.addressbookentry.recipienttype(v=exchg.150).aspx

2. You can fork or expand the recipients of a message in a Transport Agent https://msdn.microsoft.com/en-us/library/office/microsoft.exchange.data.transport.routing.queuedmessageeventsource.expandrecipients(v=exchg.150).aspx if you want to expand a list that would requires an AD call which can be very costly in terms of performance in a Transport Agent.