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Continue to ChatServer_ActiveSync heartbeat ( ISA 2004 - Exchange) https://www.tosolini.info/2011/03/server_activesync-heartbeat-isa-2004-exchange/
Server_ActiveSync heartbeat ( ISA 2004 - Exchange) https://www.tosolini.info/2011/03/server_activesync-heartbeat-isa-2004-exchange/