Hello! Thank you for help, the soultion is to use "-u" with spamc. For reference, I'm posting spamcheck transport from my exim configuration:
============================================================= spamcheck: debug_print = "T: spamassassin_pipe for [EMAIL PROTECTED]" driver = pipe command = /usr/sbin/exim4 -oMr spam-scanned -bS use_bsmtp transport_filter = /usr/bin/spamc -u [EMAIL PROTECTED] home_directory = "/tmp" current_directory = "/tmp" user = Debian-exim group = Debian-exim return_fail_output ============================================================= -- Jarek <[EMAIL PROTECTED]>