You can set a Windows registry key to specify the number of times WTC will try to send a file.
[HKEY_LOCAL_MACHINE\SOFTWARE\GlobalSCAPE Inc.\EFT Server 4.0\EFTClient\]
"re-queue"=dword:00000001
The value is the number of times the WTC puts the transfer back into the waiting queue for FAILED and CRCFAILED transfers. This "requeue" occurs within the applet (not EFT Server) and is displayed in the WTC transfer queue when an UPLOADING/DOWNLOADING item changes to WAITING status, then changes to UPLOADING/DOWNLOADING status again.
The system default is 1.