| Re: testing email deliverability... [message #186042 is a reply to message #186040] |
Thu, 05 June 2014 03:27   |
Jerry Stuckle
Messages: 2598
Registered: September 2010
Karma:
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Senior Member |
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On 6/4/2014 11:04 PM, Sam wrote:
> The Natural Philosopher writes:
>
>> what I want is a function like
>>
>> is_valid_mail("user12345(at)gmail(dot)com")
>>
>> that will return true or false if gmail accepts the user as known (yes
>> the spam is always @gmail.com) WITHOUT having to write a dns mx
>> lookup, then connect to socket 25 and etc etc etc..
>
> I'm afraid that you will have to wait until someone invents a telepathic
> computer, that will be able to accomplishing such an amazinf feat.
>
> Until then, unfortunately, a number of inconvenient laws of physics of
> this universe will prevent anyone from determining whether an email
> address is deliverable without looking up its MX server, and connecting
> to the MX server's port 25.
>
Even then you don't know if the email address is valid. May mail
servers are set to accept and trash invalid email addresses. This is
because spammers would send emails to random accounts at an email
address; if they didn't get a reject they knew the address was OK.
--
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Remove the "x" from my email address
Jerry Stuckle
jstucklex(at)attglobal(dot)net
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