Net::FTP: Net::FTP(2.65)
Net::FTP:   Exporter(5.566)
Net::FTP:   Net::Cmd(2.21)
Net::FTP:   IO::Socket::INET(1.26)
Net::FTP:     IO::Socket(1.27)
Net::FTP:       IO::Handle(1.21)

Net::FTP=GLOB(0x15de3b4)<<< 220 Service ready
Net::FTP=GLOB(0x15de3b4)>>> user mvpadmin
Net::FTP=GLOB(0x15de3b4)<<< 500 Unsupported command
Connected to 128.1.198.22
Net::FTP=GLOB(0x15de3b4)>>> TYPE I
Net::FTP: Unexpected EOF on command channel at ftptest.pl line 17
getsockname() on closed socket GEN0 at D:/Perl/lib/IO/Socket.pm line 1
+92.
[download]

Hmm ... I wonder if your FTP server can only handle an uppercase "user" command. I would try to issue the lowercase user command from your manual ftp client to see what happens. If you can only use uppercase your either going to need to hack the FTP.pm module (since it explicitly uses lower case even though the rest of the commands are uppercase) or subclass it and override the _USER method.

-derby