Tags

v1.7.0

v1.7.0

### Added

- `sendmail_mta_family`, and Postfix recognised behind a `sendmail`
  binary, also when `dpkg-divert` renamed it to `sendmail.distrib`
  (README "Available settings").

- Configuration files of the wrapper's own, `/etc/sendmail-wrapper.conf`
  and `~/.sendmail-wrapper.conf`, read after the msmtprc of their level;
  msmtp refuses `sendmail_*` keys in its own files, and a warning names
  an msmtprc that holds some (README "Configuration").

- `SENDMAIL_SYSTEM_CONFIG` and `SENDMAIL_WRAPPER_CONFIG`, each honoured
  only while the default file is absent (README "Configuration").

- `SENDMAIL_REPLYTO` as an alias of `SENDMAIL_REPLY_TO` (README
  "Configuration").

- A loop guard: the wrapper refuses to run itself, or a second copy of
  itself, as backend (`SENDMAIL_WRAPPER_DEPTH`, README "Configuration").

- `sendmail_default_account` in a config file (README "Available
  settings").

- `sendmail_warn_allmailfrom`: with nullmailer, a warning when
  `/etc/nullmailer/allmailfrom` will replace the envelope sender (README
  "Available settings").

- msmtp's `-a NAME` selects the wrapper's account section like
  `--account`, which wins where both are given (README "Default account
  and msmtp integration").

- Backend modes (`-bp`, `-bd`, `-bi`, `-bt`, `-bv`, `-bs`, `-q`) are run
  by the backend without message processing; called as `mailq` or
  `newaliases` the wrapper implies `-bp` or `-bi` (README "Exit codes").

- Flags: `-r` as `-f`, `-R`, `-L`, `-O`, `-p`, `-bm`, `-V envid`, Exim
  `-oM*`, `-N` and `-M*`, msmtp `-a` and its long options, nullmailer
  `-h` (`--help` "Known backends").

- `--help` lists the permitted flags per backend family and every
  `sendmail_*` setting (`--help` "Known backends").

- The module is importable and `main(argv)` returns the exit code
  (GUIDELINES/README.md "Working on it").

- A pytest suite under `tests/`: integration and unit layers
  (GUIDELINES/README.md "Working on it").

- The MIT licence, as `LICENSE` and as an SPDX header in `sendmail.py`,
  which is installed without the rest of the repository (LICENSE).

### Changed

- Aliases reach the backend in canonical form, short flags with a value
  as two arguments, glued-only flags as one token (README "Argument
  filtering").

- The last `-f` wins, and sets the Received and generated From address;
  `sendmail_force_header from` replaces it (README "Available settings").

- Account names are case-sensitive, `account NAME : BASE` inherits, an
  `account default` section applies by default. Configuration may need
  updating (README "Default account and msmtp integration").

- `$VAR` expansion applies to every configuration value, locked ones
  included (README "Available settings").

- `sendmail_header_add` keeps an existing header; `sendmail_header_edit`
  takes `\/` and flags (README "Custom header actions").

- `To:` is generated for a single recipient only (README "Recipient
  handling").

- The Received header is one comment and is inserted first (README
  "Message normalisation").

- Abbreviations of the wrapper's options (`--acc`) go to the backend
  (README "Command-line options").

- Sender validation accepts bare hosts, IDN and non-ASCII domains, and
  rejects parentheses and backslashes; the Received comment escapes
  the account name (README "Available settings").

- nullmailer no longer receives `-i`, `-oi` or `-t`; msmtp no longer
  `-bs` or `--show-envelope` (`--help` "Known backends").

- Wrapper-side errors, and a backend killed by a signal, exit 75 and
  are logged at ERR (README "Exit codes").

- `--version` exits 0 where the backend runs but has no version query
  (nullmailer); it was 2 (README "Exit codes").

- With `-v` the backend's output reaches the terminal instead of the
  log (`--help` "Known backends").

- Only non-UTF-8 inline text parts are re-encoded and attachments keep
  their bytes; a signed message passes through byte-identical, a nested
  `multipart/signed` included (README "Signed messages").

- Python 3.9 or newer is required; an older interpreter exits 75 with
  one line (README, top).

### Removed

- `sendmail_account`, which nothing read; `msmtpd` as a backend
  candidate (README "Available settings").

- The legacy shell wrappers `sendmail-*.sh`, superseded by `sendmail.py`
  (`git log -- 'sendmail-*.sh'`).

### Fixed

- A bare `sendmail_mta` name was resolved in the working directory, and
  discovery stopped at the wrapper on PATH instead of looking further
  (README "Available settings").

- `sendmail_flags_list` crashed the wrapper, an invalid `sendmail_filter`
  was a traceback, and `sendmail_filter off` still removed unknown flags
  (README "Argument filtering").

- Bodies with a transfer encoding, and non-text bodies, were corrupted
  (README "Message normalisation").

- `-fADDR` and VERP senders were dropped, and values of sendmail flags
  unknown to the tables became recipients (README "Argument filtering").

- Any `SENDMAIL_*` environment variable crashed the wrapper; locked keys
  were lost under `sendmail_ignore_global_config`, on undecodable bytes,
  when spelt with dashes or capitals, and when a later line set its own
  list (README "Locked settings").

- `sendmail_header_append`, `sendmail_force_header reply-to`,
  `sendmail_reply-to` and the replacement of an invalid Message-ID did
  nothing (README "Custom header actions").

- Duplicate `To:`/`Cc:` lines were dropped (now merged, keeping the
  header's spelling), and header actions from `defaults` ran twice
  (README "Message normalisation").

- A closed standard input produced a traceback (README "Message
  normalisation").

- `sendmail.py` was recorded without the executable bit, so a clone
  could not run it (README "Installation").

- A `\[` in a `sendmail_header_edit` replacement kept its backslash
  (README "Custom header actions").

- `-F` disabled the `from` directive; a system `account default` was
  ignored, and a repeated `account` section discarded the earlier one
  (README "Default account and msmtp integration").

- A `sendmail_header_*` action in the user file undid a header the
  system file forces (README "Available settings").