exim + courier + squirrelmail mail delivery in wrong directories

I just installed an E-Mailserver using exim for SMTP, courier(-imap) for fetching mails via IMAPv4 and squirrelmail as web client for the end user. Everything works fine. But when I sent an E-Mail to adress on my server, it is stored in the file /var/mail/, but not in the maildirs I created in /home//Maildir I am also able to log into squirrelmail. Sending mails also works. The copy of the sent E-Mail is stored in the right directoy. So, how do I tell exim to deliver incoming E-Mails to /home//Maildir/INBOX? Edit: My exim config (removed comments for better view) primary_hostname = renamed-gaming.com domainlist local_domains = @ domainlist relay_to_domains = hostlist relay_from_hosts = localhost acl_smtp_rcpt = acl_check_rcpt acl_smtp_data = acl_check_data #tls_certificate = /etc/ssl/exim.crt #tls_privatekey = /etc/ssl/exim.pem daemon_smtp_ports = 25 : 465 : 587 tls_on_connect_ports = 465 never_users = root host_lookup = * rfc1413_hosts = * rfc1413_query_timeout = 5s ignore_bounce_errors_after = 2d timeout_frozen_after = 7d begin acl acl_check_rcpt: accept hosts = : control = dkim_disable_verify deny message = Restricted characters in address domains = +local_domains local_parts = ^[.] : ^.*[@%!/|] deny message = Restricted characters in address domains = !+local_domains local_parts = ^[./|] : ^.*[@%!] : ^.*/\\.\\./ accept local_parts = postmaster domains = +local_domains require verify = sender accept hosts = +relay_from_hosts control = submission control = dkim_disable_verify accept authenticated = * control = submission control = dkim_disable_verify require message = relay not permitted domains = +local_domains : +relay_to_domains require verify = recipient accept acl_check_data: accept begin routers dnslookup: driver = dnslookup domains = ! +local_domains transport = remote_smtp ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 system_aliases: driver = redirect allow_fail allow_defer data = ${lookup{$local_part}lsearch{/etc/aliases}} # user = exim file_transport = address_file pipe_transport = address_pipe userforward: driver = redirect check_local_user # local_part_suffix = +* : -* # local_part_suffix_optional file = $home/.forward # allow_filter no_verify no_expn check_ancestor file_transport = address_file pipe_transport = address_pipe reply_transport = address_reply localuser: driver = accept check_local_user # local_part_suffix = +* : -* # local_part_suffix_optional transport = local_delivery cannot_route_message = Unknown user begin transports remote_smtp: driver = smtp local_delivery: driver = appendfile file = /var/mail/$local_part delivery_date_add envelope_to_add return_path_add # group = mail # mode = 0660 address_pipe: driver = pipe return_output address_file: driver = appendfile delivery_date_add envelope_to_add return_path_add address_reply: driver = autoreply # Address or Domain Error Retries # ----------------- ----- ------- * * F,2h,15m; G,16h,1h,1.5; F,4d,6h begin rewrite begin authenticators