I think I have it working now. I had to add the "port" value to odbc.ini. So, it seems that unixodbc is not using freetds.conf at all? Is this correct? Anyway, my current odbc.ini: [sqlserver] Driver = FreeTDS Description = ODBC connection via FreeTDS Trace = No Server = eeyore Port = 1433 Database = tracker TDS_Version = 8.0