FUDforum: comp.lang.php » FORMS, validating mail was sent

Home » Imported messages » comp.lang.php » FORMS, validating mail was sent

Show: Today's Messages :: Polls :: Message Navigator

Re: FORMS, validating mail was sent [message #181871 is a reply to message #181855]

Thu, 20 June 2013 20:46

gordonb.k0cb7
Messages: 1
Registered: June 2013

Karma:

Junior Member

> 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.

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.

(For a mailing list to customers, you're stuck with a variable
in the To:, Cc:, or Bcc: headers. )

Wrong: Subject: Contact form from $email
Right: Subject: Contact form - read body to tell who it's from.

Wrong: Subject: Order for $itemname
Right: Subject: Order

(Consider what happens if $email='me(at)gmail(dot)com\rCc: victim1(at)gmail(dot)com,
victim2(at)gmail(dot)com, victim3(at)gmail(dot)com, ..., victim99(at)gmail(dot)com', and
$address (used in the body) contains a 5-page-long ad for body part
enlargement)

> With that in mind, is there any way with PHP to actually tell that a
> message was actually sent? That it at least was mailed out?

The return value from the mail() function is about as good as you
can get. The mail was handed off to the MTA.

> I came across retval() and thought that might be way to do it, but I
> misinterpreted it, thinking it was a PHP function, which it turns out to
> not be. Therefore I'm looking for some way to authenticate that the
> e-mail actually left the server.

It can actually take an incredible number of DNS lookups and alias
file searches to determine if the mail is even *SUPPOSED* to leave
the server (that is, the destination is not local to the server),
especially since shared hosted web servers tend to have lots of
different DNS hostnames all pointing at them.

Report message to a moderator

[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

Previous Topic:	strange one
Next Topic:	how to change old ereg?

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Wed Jun 26 13:00:18 GMT 2024

Total time taken to generate the page: 0.04378 seconds