550 Permission denied.What's wrong?maybe because of run on virtual server?

Apr 28, 2012 at 2:08 AM

the winservice will connection ftp server every 10 minutes,and it's runing on a virtual server,every time connection will be wrong this:

2012-4-28 3:57:13    200 Type set to I.
227 Entering Passive Mode (218,72,139,161,119,76).
550 data_20120403155220.xml: No such file.
550 Permission denied.

   at FtpLib.FtpConnection.Error()
   at FtpLib.FtpConnection.GetFile(String remoteFile, String localFile, Boolean failIfExists)
   at FtpLib.FtpConnection.GetFile(String remoteFile, Boolean failIfExists)

 

 

and I try on my personal computer,all well,this logs a month or more,I don't think it's because the internet's reason.