[Zope] Email address validator?

[Bruce Eckel]

Here's an update:

"All SMTPSenderRefused is telling you is that Sendmail didn't like
the
sender's address, meaning it wasn't conformant to the relevant RFCs
to
be an Internet e-mail address.  If you're just checking the
formatting,
it's about as good as you'll find anywhere.  If you're looking for
a valid
delivery location, the only true test is to send it and not receive
a
bounce, which really only means that the other machine didn't tell
you
it was not valid."

On Sun, Nov 25, 2001 at 08:52:13AM -0800, Bruce Eckel wrote:
> Yes, the invalid sender was actually the problem, since that is
the
> address that the registrant has filled out in the form. I'm
trying
> to figure out now whether this test is reliable enough that I can
> ignore the other checks of the email address, or if I should do
> those on top of this.

So it appears from this that one could skip our format-checking
code, and just catch SMTPSenderRefused as a test for the validity
of the email address formatting. The value of this is that if the
RFCs change, someone else would update the format-checking code (in
sendmail).

*********** REPLY SEPARATOR  ***********

On 11/25/01 at 8:28 AM Jim Washington wrote:

>Bruce Eckel wrote:
>
>>Thanks! I spent a bit of time refactoring it. Also, I decided
that if it
>worked it would return the address, otherwise it would return None
to
>indicate failure.
>>
>[refactored code snipped]
>
>Interesting style!   Thanks!  Always good to learn a new thing or
two. 
> Do you plan to work on the other part about querying the SMTP
server 
>about whether it accepts mail for [email_address]?
>
>-- Jim Washington



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