You need to have compensating methods to mitigate the risk in sending a card to that other address by making very sure you know who is making the request and that it's not under duress. Sometimes you'll already know the customer is traveling out of the area because he's provided you a travel advisory, but don't let that knowledge lull you into a false sense of security. Carefully check out the identity of the person making the request.
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8