Re: testing email deliverability...

From	The Natural Philosopher <tnp@invalid.invalid>
Newsgroups	comp.os.linux.misc, comp.lang.php
Subject	Re: testing email deliverability...
Date	2014-06-05 13:51 +0100
Organization	albasani.net
Message-ID	<lmpp5f$eu2$1@news.albasani.net> (permalink)
References	<lmoeok$5v6$1@news.albasani.net> <lmpihj$461$1@speranza.aioe.org>

Cross-posted to 2 groups.

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On 05/06/14 11:59, AvdB wrote:
> "The Natural Philosopher" <tnp@invalid.invalid> schreef in bericht
> news:lmoeok$5v6$1@news.albasani.net...
>> 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..
>>
>> exim -bt tells me if the domain is valid, but not the user.
>>
>> I am not particular how its achieved - anything can be merged into the
>> existing code.
>
> As an idea to work on:
>
> is_valid_mail() checks your database for known users.

There are no known users.

Or hey wouldn't be using the contact page.

> If unknown, display a 'verify first' page.
> Present a unique code which the user has to mail back to you.
> Still not 100% save, but if a user can send using a certain address,
> there's reason to believe he can receive as well. Add the user to your
> database.

Making it bloody awkward for genuine users defeats the purpose.

>
> Not enough?
> Make it a three way handshake.
> The user mails you his code, your autoresponder sends (after verifying
> the code, obviously) another unique code.
> Your form checks { is_valid_mail() or presents_valid_code() }
> You now have proof email traffic is possible in both directions.
>
>
At this point genuine enquirers have simply buggered off elsewhere.

>


-- 
Ineptocracy

(in-ep-toc’-ra-cy) – a system of government where the least capable to 
lead are elected by the least capable of producing, and where the 
members of society least likely to sustain themselves or succeed, are 
rewarded with goods and services paid for by the confiscated wealth of a 
diminishing number of producers.

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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