Re: testing email deliverability...

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From	Jerry Stuckle <jstucklex@attglobal.net>
Newsgroups	comp.os.linux.misc, comp.lang.php
Subject	Re: testing email deliverability...
Date	Fri, 06 Jun 2014 09:41:05 -0400
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Cross-posted to 2 groups.

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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@gmail.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.


-- 
==================
Remove the "x" from my email address
Jerry Stuckle
jstucklex@attglobal.net
==================

Thread

testing email deliverability... The Natural Philosopher <tnp@invalid.invalid> - 2014-06-05 01:48 +0100
  Re: testing email deliverability... Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2014-06-04 18:40 -0700
    Re: testing email deliverability... Denis McMahon <denismfmcmahon@gmail.com> - 2014-06-05 02:05 +0000
      Re: testing email deliverability... Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2014-06-04 19:17 -0700
    Re: testing email deliverability... Rahul <nospam@invalid.invalid> - 2014-06-05 07:11 +0000
    Re: testing email deliverability... Rahul <nospam@invalid.invalid> - 2014-06-05 11:08 +0000
      Re: testing email deliverability... Marc Haber <mh+usenetspam1118@zugschl.us> - 2014-06-14 11:53 +0200
        Re: testing email deliverability... Rahul <nospam@invalid.invalid> - 2014-06-14 18:34 +0000
          Re: testing email deliverability... Marc Haber <mh+usenetspam1118@zugschl.us> - 2014-06-15 08:54 +0200
  Re: testing email deliverability... "Tony Marston" <TonyMarston@hotmail.com> - 2014-06-05 03:47 +0100
    Re: testing email deliverability... Eli the Bearded <*@eli.users.panix.com> - 2014-06-05 04:53 +0000
      Re: testing email deliverability... Richard Kettlewell <rjk@greenend.org.uk> - 2014-06-05 09:13 +0100
        Re: testing email deliverability... Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2014-06-05 08:05 -0700
          Re: testing email deliverability... The Natural Philosopher <tnp@invalid.invalid> - 2014-06-05 16:21 +0100
          Re: testing email deliverability... Jerry Stuckle <jstucklex@attglobal.net> - 2014-06-05 11:27 -0400
          Re: testing email deliverability... Mike McGinn <mikemcginn@mcginnweb.net> - 2014-06-05 16:31 +0000
            Re: testing email deliverability... "Peter J. Holzer" <hjp-usenet3@hjp.at> - 2014-06-05 21:15 +0200
      Re: testing email deliverability... Arno Welzel <usenet@arnowelzel.de> - 2014-06-09 11:30 +0200
        Re: testing email deliverability... Eli the Bearded <*@eli.users.panix.com> - 2014-06-09 23:08 +0000
          Re: testing email deliverability... Arno Welzel <usenet@arnowelzel.de> - 2014-06-10 11:08 +0200
  Re: testing email deliverability... Sam <sam@email-scan.com> - 2014-06-04 22:04 -0500
    Re: testing email deliverability... Jerry Stuckle <jstucklex@attglobal.net> - 2014-06-04 23:27 -0400
    Re: testing email deliverability... The Natural Philosopher <tnp@invalid.invalid> - 2014-06-05 05:37 +0100
      Re: testing email deliverability... Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2014-06-04 21:55 -0700
        Re: testing email deliverability... The Natural Philosopher <tnp@invalid.invalid> - 2014-06-05 06:17 +0100
      Re: testing email deliverability... Chuck Anderson <cycletourist@invalid.invalid> - 2014-06-05 21:36 -0600
        Re: testing email deliverability... Jerry Stuckle <jstucklex@attglobal.net> - 2014-06-06 09:41 -0400
          Re: testing email deliverability... Denis McMahon <denismfmcmahon@gmail.com> - 2014-06-06 14:37 +0000
            Re: testing email deliverability... The Natural Philosopher <tnp@invalid.invalid> - 2014-06-06 16:46 +0100
              Re: testing email deliverability... Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2014-06-06 10:39 -0700
                Re: testing email deliverability... Jerry Stuckle <jstucklex@attglobal.net> - 2014-06-06 14:22 -0400
                Re: testing email deliverability... The Natural Philosopher <tnp@invalid.invalid> - 2014-06-06 20:54 +0100
                Re: testing email deliverability... Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2014-06-06 13:22 -0700
                Re: testing email deliverability... Eli the Bearded <*@eli.users.panix.com> - 2014-06-06 21:55 +0000
                Re: testing email deliverability... Chris Davies <chris-usenet@roaima.co.uk> - 2014-06-09 13:56 +0100
                Re: testing email deliverability... Marc Haber <mh+usenetspam1118@zugschl.us> - 2014-06-14 11:55 +0200
  Re: testing email deliverability... Jerry Stuckle <jstucklex@attglobal.net> - 2014-06-04 23:05 -0400
  Re: testing email deliverability... "AvdB" <nomail@example.invalid> - 2014-06-05 12:59 +0200
    Re: testing email deliverability... The Natural Philosopher <tnp@invalid.invalid> - 2014-06-05 13:51 +0100
  Re: testing email deliverability... Adrienne Boswell <arbpen@yahoo.com> - 2014-06-05 18:39 +0000
    Re: testing email deliverability... Eli the Bearded <*@eli.users.panix.com> - 2014-06-05 20:46 +0000
      Re: testing email deliverability... Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2014-06-05 14:41 -0700
        Re: testing email deliverability... Eli the Bearded <*@eli.users.panix.com> - 2014-06-06 22:26 +0000
      Re: testing email deliverability... Adrienne Boswell <arbpen@yahoo.com> - 2014-06-05 22:21 +0000
  Re: testing email deliverability... James Moe <jimoeDESPAM@sohnen-moe.com> - 2014-06-05 13:14 -0700
  Re: testing email deliverability... Arno Welzel <usenet@arnowelzel.de> - 2014-06-06 14:11 +0200
  Re: testing email deliverability... Chris Davies <chris-usenet@roaima.co.uk> - 2014-06-09 13:53 +0100
  Re: testing email deliverability... don.schueler@gmail.com - 2014-07-18 03:45 -0700

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