Currently when for example using the admin interface to send out a test e-mail just
returns `SmtpError`. This is not very helpful. What i have done.
- Match some common Lettre errors to return the error message.
- Other errors will just be passed on as before.
Some small other changes:
- Fixed a clippy warning about using clone().
- Fixed a typo where Lettere was spelled with one t.
- Allow all SMTP Auth meganisms supported by Lettre.
- The config value order is leading and values can be separated by a
comma ','
- Case doesn't matter, and invalid values are ignored.
- Warning is printed when no valid value is found at all.
General:
- Updated several dependancies
Lettre:
- Updateded lettere and the workflow
- Changed encoding to base64
- Convert unix newlines to dos newlines for e-mails.
- Created custom e-mail boundary (auto generated could cause errors)
Tested the e-mails sent using several clients (Linux, Windows, MacOS, Web).
Run msglint (https://tools.ietf.org/tools/msglint/) on the generated e-mails until all errors were gone.
Lettre has changed quite some stuff compared between alpha.1 and alpha.2, i haven't noticed any issues sending e-mails during my tests.
In this implementation, the `TZ` environment variable must be set
in order for the formatted output to use a more user-friendly
time zone abbreviation (e.g., `UTC`). Otherwise, the output uses
the time zone's UTC offset (e.g., `+00:00`).
If SSL is disabled, the SMTP ClientSecurity of the lettre crate
defaults to None, that is, an insecure connection. This is changed to
Opportunistic, which uses TLS if available. If TLS is not available,
the insecure connection is used (i.e., this change is backward
compatible).
- Added a test button for checking the e-mail settings.
- Fixed a bug with the _post JavaScript function:
A function was overwriten with a variable and errors were not handled
correctly like a 500 for example.
