Hi,
I have an issue with message_drop_headers. I want to hide the Received
header and i have dk-milter set in smtpd_milters. If i set
message_drop_headers=bcc, content-length, resent-bcc, return-path,
received then the signature is broken (domainkeys=fail (bad sig)), if i
leave the default value, then the signature is correct.
The running postfix version is 3.1.3.
The documentation says: Names of message headers that the cleanup(8)
daemon will remove after applying header_checks(5) and before invoking
Milter applications. If i understand correctly first the header is
removed then the milter filter is invoked.
I tried with header_checks IGNORE, but it brokes the signature too,
despite the documentation says that there is a problem with
header_checks IGNOIRE before 20141018 (NOTE for Postfix versions that
have a mail_release_date before 20141018: do not use the
header_checks(5) IGNORE action to remove Postfix's own Received: message
header. This causes problems with mail signing filters.)
Do i miss something.
Thank You.