On Wed, 2019-01-09 at 11:22 +0000, Pete Biggs wrote:
> The X-Evolution-* headers are not exposed to the outside world -
> certainly not on recent versions. Some (perhaps all?) of the X-
> Evolution-* headers don't even really exist, they are inserted by
> Evolution when the mail is displayed and are not present in the
> stored emails.
Hi,
that's true. There is a set of "helper" headers used by Evolution
itself when sending mails. Those can be visible in the Outbox folder
and they are removed before the message is passed to the transport
service. It's not that obvious when the Outbox folder is skipped, which
is the default behavior for some time now (the message is sent
immediately when the Send is clicked in the composer window).
Such headers are X-Evolution-Identity (the From account UID),
X-Evolution-Fcc (the sent folder), X-Evolution-Transport (the transport
service UID, usually associated with the From account). Those UIDs used
to look like an email address, containing the "localhost". Newly
created UIDs look like SHA256 hash, thus they do not expose anything
from the local machine (some users consider it a private information).
The X-Evolution-Account header used to be used in the past and it
contains the same value as the X-Evolution-Identity.
I suppose the headers are left in the message only because:
On Tue, 2019-01-08 at 16:04 -0800, Van Snyder via evolution-list wrote:
> My outgoing mail isn't sent directly from my own computer. It's sent
> from an smtp server.
which I understand as the messages are stored into some specific Outbox
(not the Evolution's) and some other server/sendmail/script picks
messages from there and pushes them into the world. I cannot imagine
other reason why that particular header would be left in the outgoing
message, especially if evolution itself would connect to the SMTP
server (+/- bugs in the code). I can be wrong, though.
Bye,
Milan
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