| Re: testing email deliverability... [message #186056 is a reply to message #186043] |
Fri, 06 June 2014 03:36   |
Chuck Anderson
Messages: 63
Registered: September 2010
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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.
--
*****************************
Chuck Anderson • Boulder, CO
http://cycletourist.com
Turn Off, Tune Out, Drop In
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