I get same error
I am getting the same error - 403-forbidden...
What I am doing:
1. Using the WA Submit Site Map (part of Surveyer)
2. Selecting my sitemap XML from my site (also created in Surveyer)
3. Confirm that all search engines are selected and clicking OK
I get success results pages from all search engines EXCEPT Yahoo, from which I get the error page. (See attached image)
The URL that is failing is: ping?sitemap=http%3A%2F%2Fbozemanfigureskating.org%2Fsitemap.xml
Interestingly, if I click on the URL above (from within this forum) it seems to successfully get submitted.
Thanks for the help!