[Typo3-dev] direct_mail: Bug or Feature

[Peter Russ]

Situation:
Providing several URLs in one installation for a customer with 
individual direct mails results in chaos.

URL-1
     direct mail 1
	newsletter 1 (id=nl-1)
URL-2
     direct mail 2
         newsletter 2 (id=nl-2)

Previewing newsletters works as expected, i.e. the different URLs are 
used to display: eg:
  http://URL-1/index.php?id=nl-1
  http://URL-2/index.php/id=nl-2
So in preview each newsletter has the individual layout.

Problems raise with prefetching the newsletter:
Fetching newsletter 1 gets
    http://URL-1/index.php?id=nl-1
Everything is okay, the newsletter looks as expected.
Fetching newsletter 2 gets
    http://URL-1/index.php?id=nl-2
The newsletter nl-2 will be rendered in the layout of root template of 
URL-1 as URL-1 is address instead of URL-2 and NOT in layout of 
newsletter 2 :-(

Only work around: logout from http://URL-1/typo and login again with 
http://URL-2/typo. But this not very BE_user friendly.

I figured out that:
$this->urlbase = 
substr(t3lib_div::getIndpEnv("TYPO3_REQUEST_DIR"),0,-(strlen(TYPO3_MOD_PATH)+strlen(TYPO3_mainDir)));

causes the problem, but have at the moment no time to dive into the code 
and fix this to the correct url as preview does. Any hints to help me to 
save time are welcome. If this would be a bug, fix would be provided then.

Regs. Peter.