Cannot Connect to SFTP Site

[cdun2]

I am a first time user, and having some real problems trying to connect to an SFTP site. The software is running on Windows 7 Pro, 64 bit.

When attempting to connect, I get the following responses:

FlashFXP 4.0.0 (build 1488) [RC 2]

WinSock 2.0 -- OpenSSL 1.0.0a 1 Jun 2010
[L] Connecting to SFTP_1 -> DNS=sftp.metavante.com IP=206.71.17.45 PORT=22
[L] Connection failed (Connection refused)
[L] Delaying for 120 seconds before reconnect attempt #1
[L] Connecting to SFTP_1 -> DNS=sftp.metavante.com IP=206.71.17.45 PORT=22 (attempt # 1)
[L] Connection failed (Connection refused)
[L] Delaying for 120 seconds before reconnect attempt #2
[L] Connecting to SFTP_1 -> DNS=sftp.metavante.com IP=206.71.17.45 PORT=22 (attempt # 2)
[L] Connection failed (Connection refused)
[L] Delaying for 120 seconds before reconnect attempt #3
[L] Connecting to SFTP_1 -> DNS=sftp.metavante.com IP=206.71.17.45 PORT=22 (attempt # 3)
[L] Connection failed (Connection refused)
[L] Delaying for 120 seconds before reconnect attempt #4

I've tried to enable session logging, but I get no log file (I guess that's because I can't establish a session). I have the credentials correct. How do I begin to troubleshoot this? Someone else here has been able to get into the site using WinSCP v3.8.

Update: I just tried WinSCP v 4.2.9, and I'm having the same problem. This machine is also running McAfee VirusScan Enterprise 8.7.0i (the client).