| Re: testing email deliverability... [message #186061 is a reply to message #186056] |
Fri, 06 June 2014 13:41   |
Jerry Stuckle
Messages: 2598
Registered: September 2010
Karma:
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Senior Member |
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On 6/5/2014 11:36 PM, Chuck Anderson wrote:
> The Natural Philosopher wrote:
>> On 05/06/14 04:04, 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.
>>>
>> I meant without me having to write such code,, but it seems someone
>> already hass..
>>
>> http://www.tienhuis.nl/files/email_verify_source.php
>
> I feel I'm about to step into a giant pile of doo, but .... Some years
> back I used a Windows program from Analogx called listmaster pro to
> verify email addresses manually (it is designed to be used with large
> mail lists. I never verified more than several at a time). It always
> gave me correct positive and negative results. It seems to me that, in
> general, an email address can be verified as a valid mailbox - or not.
> There are no guarantees, of course, but this program always gave me the
> correct result.
>
And how did it know?
For instance - I have three domains. You can send and email to any
address at any of the three. But unless it's a valid address, the email
ends up in /dev/null.
--
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Remove the "x" from my email address
Jerry Stuckle
jstucklex(at)attglobal(dot)net
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