Hi John, I've never had a problem getting a direct QSL from JT1CO or JT5DX, but the problem now is that Mongolia is on the suspended mail service list. https://about.usps.com/newsroom/service-alerts/international/welcome.htm This may have been in effect for a long time. If you already sent the cards to him, I suggest waiting. He will come through as he always has. 73, Jim W6YA