I have a GAL with around 20K entries and i want to send mails only to people in specific country .. i guess the best way to create an Address list and filter the same via some attribute called country but i am not able to define this or same is not working for me .. can some one please guide how can i create an address list which will filter addresses from GAL based o

I believe you would use -RecipientFilter {c -eq 'US'}

http://technet.microsoft.com/en-us/library/bb738157(v=exchg.150).aspx

thnaks ED for the reply ... but it didint worked for me.. ok let me tell you the scenario ..the GAL which i was talking to you i checked the entries from AD and i didnt found country entry reflecting there so my first issue now is to use set command and put the "CountryOrRegion" entry in the GAL contacts... so just to check i have one test setup and on that i executed below commands...

Import-Csv .\Contactstest.csv|%{New-MailContact -DisplayName $_.Name -ExternalEmailAddress $_.EmailAddress -Name $_.Name -FirstName $_.FirstName -LastName $_.LastName -OrganizationalUnit goevocloud.com/External-Contacts}  ===WORKED FINE - contacts creatd

$Contacts = Import-CSV .\contactstest.csv

$Contacts | ForEach {Set-Contact  $_.Name -StreetAddress ($_.Street  + " ") -StateorProvince ($_.State + " ") -PostalCode ($_.PostalCode + " ") -Phone ($_.Phone + " ") -MobilePhone ($_.MobilePhone + " ") -HomePhone ($_.HomePhone + " ") -Company ($_.Company  + " ") -OtherTelephone ($_.OtherTelephone + " ") -Fax ($_.Fax + " ") -CountryOrRegion ($_.Country + " ")} ==> this command is giving error, please see below screen shot. please advise... i guess now the first worry is to enter the country value in GAL contacts and then create access list based on filter.