Hi,

1. I have three sitemaps submitted to webmastertools.
2. In that one has very few links and was accepted. It showed a green tick.
3. The other two had around 150 links. They had been accepted in think yet webmastertools displays the exclamation mark.
4. I think i saw this already but what confused was my hosting was blocking frequent bots recently by using a firewall and just now they added googles ip range in their witelist. and then my robots and sitemaps were read by webmastertools.
5. But two sitemaps shows exclamation. I hope it is nothing to do with the above problem.

What are all the reasons and where can i see the reason for that exclamation mark.?

Here is the screen shot.