This is in reference to #615358: user@localhost no longer validates as an acceptable email address.
The problem is that Aegir, running on Drupal 6, allows an address such as "webmaster@localhost". When attempting to create a Drupal 7 site, installation fails as the address is no longer considered valid.
Comments
Comment #1
Anonymous (not verified) commentedI appear to have fixed this in git, good idea to validate the email address anyway.
Still not convinced it shouldn't be allowed, but that isn't for here!
Comment #2
Anonymous (not verified) commentedI'm anticipating Drama because of that disallowance of user@localhost. In which case, this is worth a read #308138: Make valid_email_address() support IDNs