wget - wget 无法在不同的域中找到文件

Question

我正在使用wget递归选项 ( -r) 下载文件并启用递归以转到其他域 ( -H)。当它找不到某个文件时，wget 只是继续尝试

--2013-05-05 13:38:52--  http://clnet.ucla.edu/robots.txt
Resolving clnet.ucla.edu... 128.97.168.150
Connecting to clnet.ucla.edu|128.97.168.150|:80... failed: Connection timed out.
Retrying.

--2013-05-05 13:39:14--  (try: 2)  http://clnet.ucla.edu/robots.txt
Connecting to clnet.ucla.edu|128.97.168.150|:80... failed: Connection timed out.
Retrying.

向下尝试 10，依此类推。有没有办法告诉 wget 只是忽略这个文件？