[TYPO3] direct mail / function getURL() causes an internal server error (500)?

[Daniel Schledermann]

Timo Rehmann wrote:
> hello folks,
> 
> is there any issue concerning the direct mail extension, that leads to 
> an 500 internal server error, while fetching the html-mail. the script 
> aborts at the line
> 
> // class.t3lib_htmlmail.php, getUrl()
> 
> if($fd = @fopen($url,"rb"))    { ...
> 
> this reproducable crash exists since a server-exchange with this majo 
> changes:
> 
> PHP4->PHP5,
> MySql3->MySql5,
> PHPmod->FastCGI,
> HTTP->HTTPS
> 
> we installed an instance of the t3-installation to simple 
> HTTP-environment (same server), and in that environment the error does 
> not occur.
> 

You really need to test them one step at a time.

Start downgrading your setup one at a time to see what component fails. 
I would do it in the following order:
- Using mod_php instead of fastcgi.
- Switch to HTTP.
- Use PHP4.
- Downgrade mysql.

/Daniel