[Fix} Mail: allow domains as domain.edu.co
domain without .xx should not validate
reverting checking for dot + changing test to true
changed one condition to let the tests pass, splited one test in two and used more specifc annotations
Merge pull request #12 from rdeutz/infograf768/maildoubledot

changed one condition to let the tests pass, splited one test in two
Merge pull request #4905 from infograf768/maildoubledot

[Fix] Mail: allow domains as domain.edu.co