> >From <sen...@my.domain> > Received: from CLIENT (client.my.domain [xx.xx.xx.xx]) by server.my.domain > Message-ID: <xxxx...@client>
Postfix always produces Received: headers that include "by servername (Postfix) with protocolname", followed by "for <recipient>" if the message has only one recipient. If that information is deleted, then you need to examine your header_checks rules. Wietse