Currently, if the `certs/` directory has a symlink inside, we skip it.
That is not really intended, it's an unfortunate side-effect of skipping
regular files.
To fix this, this patch adjusts the logic to only ignore regular files
instead. It also adds a message when a directory is skipped, to make it
easier to debug permission issues.
Thanks to @erjoalgo for reporting this in
https://github.com/albertito/chasquid/pull/39, and providing an
alternative patch!
This patch adds support for TLS-wrapped submission connections.
Instead of clients establishing a connection over plain text and then
using STARTTLS to switch over a TLS connection, this new mode allows the
clients to connect directly over TLS, like it's done in HTTPS.
This is not an official standard yet, but it's reasonably common in
practice, and provides some advantages over the traditional submission
port.
The default port is 465, commonly used for this; chasquid defaults to
systemd file descriptor passing as for the other protocols (for now).
The default INFO logs are more oriented towards debugging and can be
a bit too verbose when looking for high-level information.
This patch introduces a new "maillog" package, used to log messages of
particular relevance to mail transmission at a higher level.
This patch tidies up the Procmail courier:
- Move the configuration options to the courier instance, instead of using
global variables.
- Implement more useful string replacement options.
- Use exec.CommandContext for running the command with a timeout.
As a consequence of the first item, the queue now takes the couriers via its
constructor.
This patch adds a "data_dir" option, that chasquid will use to store
persistent data. It defaults to "/var/lib/chasquid" (for now, at least).
Users will come in subsequent patches.
We want to be able to distinguish between connections for SMTP and connections
for submission, so we can make different policy decisions.
To do that, we first make the configuration aware of the different kinds of
addresses. This is done in this patch in a backwards-incompatible way, but at
this point in time it is ok to do so.
Then, we extend systemd's socket passing library to support socket naming, so
we can tell the different sockets apart. This is done via the
LISTEN_FDNAMES/FileDescriptorName mechanism.
And finally we make the server and connection types aware of the socket mode.
