I have the following error using postfix 2.8.0-RC1
Jan 17 01:38:36 server postfix/smtp[5807]: warning: unexpected
attribute rewrite_context from smtp socket (expecting: log_ident)
Jan 17 01:38:36 server postfix/smtp[5807]: warning:
deliver_request_get: error receiving common attributes
Jan 17 01:38:36 server postfix/smtp[5805]: warning: unexpected
attribute rewrite_context from smtp socket (expecting: log_ident)
Jan 17 01:38:36 server postfix/smtp[5805]: warning:
deliver_request_get: error receiving common attributes
I was using 2,7,2 before without this bug