Ralf Hildebrandt via Postfix-users:
> non_empty_end_of_header_action = add_header
>
> is adding a header when the primary message header is terminated with
> a non-empty line.
>
> postconf(5) says:
>
> Insert a MIME-Error: header and an empty line before the erroneous
> text. Example:
> MIME-Error: message header was not terminated by empty line
>
> Is there anything logged alongside this? Or do I need to set up a
> header_checks entry (and does this even work, given that it's also
> done in/by cleanup(8))?
It is not logged. Should it?
The reason for adding the empty line decades ago was to prevent
other software from considering the errorous text (and non-empty
lines that may follow) as part of the message header.
Ambiguity is a source of security problems.
Wietse
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