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 /www/htdocs/imaptest.php on line 2 imaptest.php contains the following: <? $mb = imap_open("{localhost:110/pop3}INBOX", "username", "password"); ?> I use php 4.0.6 with apache 1.3.22, and my configure string is: ./configure --with-mysql \ --with-config-file-path=/www/conf \ --with-apache=$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 just about every c-client from 4.7 to 2001a, and followed the installation instructions on www.php.net. I've checked with both tcpdump and netstat, and php doesn't even open a connection.... Does anyone have a clue about what could be wrong? Best regards, Johan