On Apr 21, 2015, at 08:49, Wietse Venema <wie...@porcupine.org> wrote: > > The Postfix SMTP id is the queue file name. The most likely explanation > is that the Received: header was modified with a header_checks rule or > content filter.
Thanks, I'll look at my header_checks, though I suspect it's spamass-milter. Would I see that change logged if I turn on debugging?