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Re: FORMS, validating mail was sent [message #181897 is a reply to message #181896]

Fri, 21 June 2013 11:27

Tim Streater
Messages: 328
Registered: September 2010

Karma:

Senior Member

In article <kq19lv$pqa$1(at)news(dot)albasani(dot)net>,
The Natural Philosopher <tnp(at)invalid(dot)invalid> wrote:

> On 21/06/13 10:11, Tim Streater wrote:
>> In article <51c37641$0$6623$9b4e6d93(at)newsspool2(dot)arcor-online(dot)net>,
>> Christoph Michael Becker <cmbecker69(at)arcor(dot)de> wrote:
>>
>>> Am 20.06.2013 22:46, schrieb Gordon Burditt:
>>>> > I'm a PHP near-newbie working fairly successfully on creating a
>>> secure >> PHP e-mail (mail()) function. It occurs to me that the only
>>> way a user >> knows (thinks) a form has been sent, is that I tell him
>>> so either in a >> line of code or with a Thank You page.
>>>> > Since you're a near-newbie, please save the world from having to
>>>> block email from your server, and DO NOT put any variables in email
>>>> headers, DO NOT put any variables from the user in email headers,
>>>> and DO NOT put any variables set in your form in email headers.
>>>> Put them in the body of the mail.
>>>
>>> Or use at least a good email library which caters for security issues
>>> and other "details" regarding correct headers.
>>>
>>> And one should not forget that not everything could be put in the
>>> message body--at least not without proper setting of some headers.
>>>
>>>> Wrong: From: $email
>>>> Right: From: www-data(at)myserver(dot)hostingco(dot)com
>>>> > Some servers are going to require that (a) the From: address is
>>>> local, (b) the From: address is a valid local user, and perhaps (c)
>>>> the user name must match the user id of the code that called the
>>>> MTA. In other words, there might be only one correct From: line
>>>> you're allowed to use.
>>>
>>> Indeed, but the OP may *try* if custom From headers are allowed on his
>>> webspace.
>>>
>>>> (For a mailing list to customers, you're stuck with a variable
>>>> in the To:, Cc:, or Bcc: headers. )
>>>
>>> In my limited experience Cc and Bcc headers *might* be blocked by the
>>> ISP.
>>
>> Well you shouldn't be sending a Bcc: header, now, should you? :-)
>
> well there is no there way other than sending EACH message INDIVIDULLY
> that you can hide other members of the mailing list from the intended
> recipient.

Here's how I do it in my email client wot I rote.

1) The user (i.e, just me at this point) composes a mail and adds a
certain number of destination addresses in the To:, cc:, and bcc: fields.

2) These are then checked for being properly formatted and stored in
three strings.

3) At the point the mail is sent, logon to the mail host. Send "MAIL
FROM <address>" where 'address' is whatever the user types into the From
field or gets put there automatically if the user selects it.

4) The three strings from (2) are converted to arrays of addresses and
sent to the host as a series of "RCPT TO <address>".

5) Then send "DATA" followed by the headers such as From:, Subject:
Date:, cc:, any content-type and so on, then a blank line and the actual
body, encoded and in parts as necessary.

So that's one mail sent for all the addresses (above I've left out
checking returned statuses, timeouts, etc) with no bcc: line sent. So
all the addresses *could* be put in the bcc: field, with no
inter-recipient consciousness.

--
Tim

"That excessive bail ought not to be required, nor excessive fines imposed,
nor cruel and unusual punishments inflicted" -- Bill of Rights 1689

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[Message index]

		FORMS, validating mail was sent By: bill on Thu, 20 June 2013 17:40
		Re: FORMS, validating mail was sent By: Jerry Stuckle on Thu, 20 June 2013 17:53
		Re: FORMS, validating mail was sent By: J.O. Aho on Thu, 20 June 2013 18:18
		Re: FORMS, validating mail was sent By: The Natural Philosoph on Thu, 20 June 2013 18:24
		Re: FORMS, validating mail was sent By: Jerry Stuckle on Thu, 20 June 2013 18:40
		Re: FORMS, validating mail was sent By: gordonb.vb4vo on Thu, 20 June 2013 19:44
		Re: FORMS, validating mail was sent By: The Natural Philosoph on Thu, 20 June 2013 21:03
		Re: FORMS, validating mail was sent By: bill on Fri, 21 June 2013 18:06
		Re: FORMS, validating mail was sent By: bill on Sat, 22 June 2013 15:42
		Re: FORMS, validating mail was sent By: Thomas 'PointedEars' on Sun, 23 June 2013 11:13
		Re: FORMS, validating mail was sent By: The Natural Philosoph on Sun, 23 June 2013 11:22
		Re: FORMS, validating mail was sent By: bill on Sun, 23 June 2013 17:07
		Re: FORMS, validating mail was sent By: bill on Sun, 23 June 2013 17:00
		Re: FORMS, validating mail was sent By: J.O. Aho on Sun, 23 June 2013 18:22
		Re: FORMS, validating mail was sent By: bill on Sun, 23 June 2013 18:53
		Re: FORMS, validating mail was sent By: gordonb.4qaft on Mon, 24 June 2013 19:43
		Re: FORMS, validating mail was sent By: Peter H. Coffin on Mon, 24 June 2013 20:09
		Re: FORMS, validating mail was sent By: Thomas 'PointedEars' on Tue, 25 June 2013 13:19
		Re: FORMS, validating mail was sent By: Jerry Stuckle on Tue, 25 June 2013 14:11
		Re: FORMS, validating mail was sent By: bill on Tue, 25 June 2013 15:43
		Re: FORMS, validating mail was sent By: bill on Tue, 25 June 2013 15:32
		Re: FORMS, validating mail was sent By: gordonb.htsnc on Thu, 27 June 2013 15:57
		Re: FORMS, validating mail was sent By: Thomas 'PointedEars' on Thu, 27 June 2013 19:13
		Re: FORMS, validating mail was sent By: Arno Welzel on Fri, 28 June 2013 09:43
		Re: FORMS, validating mail was sent By: gordonb.k0cb7 on Thu, 20 June 2013 20:46
		Re: FORMS, validating mail was sent By: Jerry Stuckle on Thu, 20 June 2013 21:03
		Re: FORMS, validating mail was sent By: gordonb.udxst on Sat, 22 June 2013 00:26
		Re: FORMS, validating mail was sent By: Jerry Stuckle on Sat, 22 June 2013 00:36
		Re: FORMS, validating mail was sent By: bill on Sat, 22 June 2013 16:04
		Re: FORMS, validating mail was sent By: Christoph Michael Bec on Thu, 20 June 2013 21:39
		Re: FORMS, validating mail was sent By: Tim Streater on Fri, 21 June 2013 09:11
		Re: FORMS, validating mail was sent By: The Natural Philosoph on Fri, 21 June 2013 10:25
		Re: FORMS, validating mail was sent By: Tim Streater on Fri, 21 June 2013 11:27
		Re: FORMS, validating mail was sent By: The Natural Philosoph on Fri, 21 June 2013 16:59
		Re: FORMS, validating mail was sent By: Tim Streater on Fri, 21 June 2013 17:25
		Re: FORMS, validating mail was sent By: The Natural Philosoph on Fri, 21 June 2013 22:43
		Re: FORMS, validating mail was sent By: Tim Streater on Sat, 22 June 2013 12:45
		Re: FORMS, validating mail was sent By: bill on Sat, 22 June 2013 16:20
		Re: FORMS, validating mail was sent By: Peter H. Coffin on Thu, 20 June 2013 22:27
		Re: FORMS, validating mail was sent By: The Natural Philosoph on Fri, 21 June 2013 06:57
		Re: FORMS, validating mail was sent By: bill on Sat, 22 June 2013 16:02
		Re: FORMS, validating mail was sent By: GravyCode on Fri, 21 June 2013 18:30

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