FTP Authentication

I am trying to gain access to the ftp server from uutside the local LAN. I am using SBS Server 2003 and I can access FTP internally but not externally I get a message that says: invalid user ID. What could the problem be?
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Lee W, MVPConnect With a Mentor Technology and Business Process AdvisorCommented:
IIS maybe configured to block IPs outside of the current subnet (or something similar).  You might also need to specify the username in "domain\user" format.
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