I'm using a VPS with CentOS 5, containing Postfix and OpenDKIM. I have set up OpenDKIM using this guide. Everything seems to work properly as the log in /var/log/maillog does not report anything other than that OpenDKIM is running.
The problem is that once I try to use PHP to send an email (mail() function), I notice my maillog spits this out:
Sep 20 17:28:36 localhost postfix/cleanup[973]: warning: connect to Milter service inet:127.0.0.1:8891: Connection timed out
However, using netstat shows it's listening on that port. Strangely, using telnet to connect to 127.0.0.1:8891 fails to connect aswell. I have the feeling that something is configured improperly, but I'm not an experienced Unix user at all.
