Hi. I use ubuntu 8.10 server 64 bit + postfix + dkim-filter + dovecot There is a problem with dkim-filter. I followed the instruction at https://help.ubuntu.com/community/Postfix/dkim-milter Everything worked fine until I ran apt-get upgrade. The dkim-filter didn't work. When I sent mail, syslog said Code: ... Mar 19 16:40:57 myubuntu postfix/smtpd:warning: milter inet:127.0.0.1:8891: can't read SMFIC_OPTNEG reply packet header: Connection timed out Mar 19 16:40:57 myubuntu postfix/smtpd: warning: milter inet:127.0.0.1:8891:read error in initial handshake ... The mail is sent successful but without dkim's header. Hotmail just send my mail directly to the junk folder when I tried to restart dkim-filter the syslog said Code: ... Mar 19 06:31:18 myubuntu dkim-filter: can't configure DKIM library; continuing Mar 19 06:31:18 myubuntu dkim-filter: Sendmail DKIM Filter v2.6.0 starting (args: -x /etc/dkim-filter.conf -p local) ... After restarted dkim-filter. It ran normally but didn't work with postfix!?! any idea to fix dkim-filter? Thanks.