Thanks Guys. Glad I could help find this bug.
Is the patch safe to implement on a production system?
http://isp-control.net/ispcp/changeset/3196
Will it stop the following errors?
Aug 11 10:44:58 drizzle postfix/smtpd[15981]: warning: premature end-of-input on private/rewrite socket while reading input attribute name
Aug 11 10:44:58 drizzle postfix/smtpd[15981]: warning: problem talking to service rewrite: Connection reset by peer
or will they still come up because of postfix reload the hash table?
Aug 11 10:44:58 drizzle postfix/trivial-rewrite[15919]: table hash:/etc/postfix/ispcp/transport(0,lock|no_regsub|fold_fix) has changed -- restarting
ps. How does one ever get reputation points on this forum?