Verify an e-mail-adress - syntax and dns

[Georg Brandl]

Christophe wrote:
> Steven D'Aprano a écrit :
>> By memory, in an thread about the same topic just a few days ago, Fredrik
>> Lundh posted a link to Perl's FAQs that suggests a method for "validating"
>> email addresses: treat it like a password and ask the user to type it
>> twice. That will protect against simple typos and input errors.
> 
> I hate that thing. When I see that, I type my email once and copy/paste 
> into the second edit box. This is useless AND annoying at the same time.

It may be for you, but there certainly are users that misspel their
e-mail address more frequently, just like passwords. And therefore it's a
nice touch to spare both the original submitter and the owner of the
misspelled address more work.

Georg