imap/pop3 problems

Hello! When I do an imap_open(), all I get is this: (i've tried w/ both imap and pop3) Warning: Couldn't open stream {localhost:110/pop3}INBOX in /xxx/yyy/xxx/imap.php on line 2 I use php 4.0.6 with apache 1.3.22, and my configure string is: ./configure --with-mysql \ --with-config-file-path=/www/conf \ --with-apache=$apachepwd \ --enable-track-vars \ --enable-trans-sid \ --with-imap=../imap-2001a \ --with-gd=/usr \ --with-jpeg-dir=/usr/lib \ --with-xpm-dir=/usr/X11R6 \ --enable-ftp I've tried every c-client from 4.7 to 2001a, and followed the installation instructions on www.php.net, does anyone have a clue about what could be wrong? I've checked with both tcpdump and netstat, and php doesn't even open a connection.... Best regards, Johan