On Wed, 14 Mar 2007, David Sparks wrote:
After some work with tcpdump it became apparent that postfix was pipelining the message complete with . and QUIT and qpsmtpd-async would close the socket after several seconds with no errors logged. Misspelling PIPELINE in SMTP.pm "fixed" the connectivity between postfix and qpsmtpd.I'm not sure where to begin to try to debug this.
Posting an strace would be a good idea if you'd like others to help.
