Posted by ooba gooba on 09/11/06 20:39

Doh. You're right. It still doesn't explain why the return-path header
doesn't appear in the received email. <sigh>

Thanks, Rik.

Rik wrote:
> ooba gooba wrote:
>> Hi,
>>
>> I'm trying to track down why some recipients of our emails never
>> receive them. These emails are sent from a PHP script which uses the
>> 3rd party phpmailer class. The possible cause for the email problem
>> is that the email headers have an invalid "Return-path". This is due
>> to an apparent bug in PHP, which I have replicated as follows:
>>
>> The following code:
>>
>> class Bug
>> {
>> var $From = 'address@domain.com';
>>
>> function Test()
>> {
>> echo "FROM=[$this->From]<br>";
>>
>> $returnpath = "Return-path: <$this->From>\n";
>> echo "1: $returnpath<br>";
>>
>> $returnpath = "Return-path: <{$this->From}>\n";
>> echo "2: $returnpath<br>";
>>
>> $returnpath = 'Return-path: <'.$this->From.">\n";
>> echo "3: $returnpath<br>";
>>
>> $returnpath = 'Return-path: '.'<'.$this->From.">\n";
>> echo "4: $returnpath<br>";
>>
>> $returnpath = 'Return-path: <['.$this->From."]>\n";
>> echo "5: $returnpath<br>";
>>
>> $returnpath = "Return-path: [$this->From]\n";
>> echo "6: $returnpath<br>";
>> }
>> }
>>
>> $instance = new Bug();
>> $instance->Test();
>>
>> Results in this output:
>>
>> FROM=[address@domain.com]
>> 1: Return-path:
>> 2: Return-path:
>> 3: Return-path:
>> 4: Return-path:
>> 5: Return-path: <[address@domain.com]>
>> 6: Return-path: [address@domain.com]
>>
>> It appears that everything after the < character in the string is
>> getting truncated. I have so far been unable to generate a valid
>> Return-path string. My web host is using PHP 4.4.2. I have attached
>> a sample PHP file that replicates this bug. Does anyone know if this
>> bug still exists in 4.4.4?
>
> I highly doubt it.
> Browsers usually hide everything in beteween the <>.
> Look at the source of the page, and probably all data is there like it
> should be.
>
> If you're curious what headers are sent, send yourself an email, and check
> it's headers. Don't try to emulate them in a browser. Aside from the fact
> that a browser has got his own logic you can't trace the path/possible
> added headers by either your or another server.
>
> Grtz,

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