imap

Hello
 I'm trying to use imap_search to retrieve the all the post after a given
date and then put them into a mysql DB. I don't know if this is the best way
to do it.


$searchstr = "SINCE Thu, 30 Aug 2001 12:05:49 +0200";
$search = imap_search($nntp, $searchstr, SE_UID);

This should give me a array of all the post after the date in $searchstr,
but instead it gives me all the posts in the newsgroup.

Is there anyone that can help me?
Thank you

Shimon