[TYPO3-dev] RFC: #11301: Feature: add eval email

[Peter Russ]

--- Original Nachricht ---
Absender:   bernd wilke
Datum:       02.06.2009 15:48:
> Am Wed, 27 May 2009 17:12:08 +0200 schrieb Mathias Schreiber [wmdb >] in 
> typo3.teams.core:
> 
>> Steffen Kamper schrieb:
>>> Hi,
>>>
>>> Johannes Feustel schrieb:
>>>> evalFunc_email doesn't test if a tld exists. Why not using RegExp like
>>>> /^([\w]+)(\.[\w]+)*@([\w\-]+\.){1,5}([A-Za-z]){2,4}$/; (copied from
>>>> ExtJS) or using ExtJS validation directly?
>>>>
>>>>
>>> i didn't want to run in same problems we had before in php with reg
>>> exp., so JS-test is very simple:
>>> does @ exist, does . exist, don't start with @, don't end with . The
>>> deeper validation is done php-side.
>> I like the idea, the docs should clearly state that the validation is
>> rather basic and that email like huselpusel at 192.168.13.13 aren't covered
>> by this.
> 
> if the validation should be complete you need a much complexer regexp, as 
> email-addresses could be much more complex [1].
> on first look: meanwhile there is a TLD 'museum': your last counting 
> {2,4} must be expanded, but than you got other problems: [2]
> second thought: what about umlaut-domains? "fritz at müller.de" (I don't 
> think they are handled by [1])
> 
> I think a full regexp will be slow, either javascript or PHP, and a real 
> validation will have to test wether the server exists and accepts mail 
> for this address. And then you won't know wether there will be a reader 
> to this mail or if it is dropped as unwanted. 
> Two weeks ago I got a huge load of undelivery-mails as a result of a spam-
> wave with sender-addresses with random addresses from my domain (probably 
> combining real address parts in front of '@' with my domain). There were 
> a lot of 'valid' email-addresses but no mailbox to receive them 
> 
> [1] http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html
> [2] http://www.regular-expressions.info/email.html
> 
> bernd
> 

Why not use internal PHP email filter?

Peter

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