I agree that 32 characters is too small, but I don't know where the limit is coming from.

Hi Lyle,

Seems the problem is that the function uc_textfield() defaults to a #maxlength of 32. So the forms API validation generates that error for any textfield that doesn't override the default #maxlength.

Two ways to fix this. Either 1) change the #maxlength default in the uc_textfield() function declaration, or 2) explicitly pass uc_textfield() a #maxlength when defining an e-mail input field on a form. The first just defers the problem, since then e-mail addresses of 64 (or 128, or whatever the new limit is) characters will still fail. The second requires reviewing *all* uses of uc_textfield() in Ubercart to ensure the default #maxlength=32 is appropriate for each use (and changing the call to pass a more appropriate #maxlength if not...). I'm sure this implicit limit affects other inputs, or at least other uses of the e-mail field, so I think it really does warrant a review of all the code to see if the same problem exists elsewhere.