https://bugs.exim.org/show_bug.cgi?id=1999
--- Comment #1 from Jeremy Harris <jgh146exb@???> ---
Although CHUNKING is not line-oriented for transmission purposes, RFC 3030
does not release the SMTP obligation on line-length limits. It could be
argued either way; I can imagine receiver implementations which still have
a limited-size line buffer in the processing path. On that basis the length
limit should still be applied by a sender for interoperability.
The $max_received_linelength variable could
- be documented as to what it currently does, under CHUNKING. My guess is
the it's only counting headers.
- be fixed to count body lines in full, enforcing a performance penalty
-- possibly with a lazy-evaluation
- be set to a known-invalid value under CHUNKING
We probably also need a variable for observability of CHUNKING.
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