Multiple Email addresses for MailContact - NOT MAILBOX

Question

Hi,
This is probably in the wrong section but an admin can move it if needed.
I am working with Exchange Management Shell for Exchange Server 2010, and would like to know if it is possible to add a secondary email address to
MailContacts through powershell.
I can double click each contact go to the email address tab and add additional email addresses there but I want to know if its is possible through the powershell.
The only information ive found online is to do this for a Mailbox.
Your help is greatly appreciated.
Regards,
Bill

Answer 1

Bill,
The Exchange attribute you're looking to modify for the MailContact is the
EmailAddresses attribute (equivalent to the ProxyAddresses AD Attribute)
Using powershell to add them may look something like this:
$contacts = get-mailcontact
foreach($contact in $contacts){
#get the existing SMTP address for the contact
$existingaddress = $contact.primarysmtpaddress.tostring()
#example of creating a new SMTP address for the contact based on existing attributes, and removing spaces. Replace this with however you're going to build the new address.
$newaddress = ($($contact.DisplayName.tostring()) + "@domain.com").Replace(" ","")
#sets the contact to have multiple SMTP addresses, Note that the first address listed will become the PrimarySMTPAddress for the contact.
set-mailcontact -emailaddresspolicyenabled $false -Emailaddresses $existingaddress,$newaddress
#Full disclosure: I tested this code on my Exchange 2013 lab, not Exchange 2010, however this should work either way.
I think it is important to note however that adding additional external addresses would be a moot point, as Exchange will only send to what is listed as the targetAddress (Single value) of the contact. However, if you're looking for multiple "internal"
SMTP addresses to map to a single "external" SMTP address, this should work, depending on your environment/requirements.
Woody Colling, MCITP Exchange 2010
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