// Can't get symlink to work even with rawsetting, so executing this to get the real link
var commandResult = session.ExecuteCommand($"CWD {remotePath}");
//250 OK. Current directory is /.m/mirrors1l/ftp.imdb.com/pub
var pathToRemoteFile = $"{commandResult.Output.Replace("250 OK. Current directory is ", "")}/{remoteFileName}";

FollowDirectorySymlinks

try
{
   var sessionOptions = new SessionOptions
   {
      Protocol = Protocol.Ftp
   };
 
   sessionOptions.ParseUrl("ftp://anon:anon@ftp.funet.fi/");
   sessionOptions.AddRawSettings("ResolveSymlinks", "1");
   sessionOptions.AddRawSettings("FollowDirectorySymlinks", "1");
 
   using (Session session = new Session())
   {
      session.FileTransferProgress += progressHandler;
 
      session.Open(sessionOptions);
 
      TransferOptions transferOptions = new TransferOptions();
      transferOptions.TransferMode = TransferMode.Binary;
 
      var transferResult = session.GetFiles(
         "/pub/mirrors/ftp.imdb.com/pub/aka-titles.list.gz", 
         "c:\SomeFolder\aka-titles.list.gz", 
         false, 
         transferOptions);
 
      transferResult.Check();
   }
}
catch (Exception e)
{
   Debug.WriteLine("Error: {0}", e);
}