We’ve addressed the problem that some Flickr people have been having with uploading via email. Certain phone service providers rely on “send to” email addresses being of a certain length, and our default was too long. Here’s a link to your Upload Via Email settings page.
So, we’ve reduced the length of the addresses generated by the system, and removed dashes which we were using as separators.
If you are still experiencing any difficulty, please let us know.