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queue: Get the DSN domain from the message

Picking the domain used in the DSN message "From" header is more
complicated than it needs to be, causing confusing code paths and having
different uses for the hostname, which should be purely aesthetic.

This patch makes the queue pick the DSN "From" domain from the message
itself, by looking for a local domain in either the sender or the
original recipients. We should find at least one, otherwise it'd be
relaying.

This allows the code to be simplified, and we can narrow the scope of
the hostname option even further.
This commit is contained in:
Alberto Bertogli
2016-11-03 00:48:34 +00:00
parent 2da74c1758
commit fea808f8e3
6 changed files with 43 additions and 36 deletions

View File

@@ -2,13 +2,9 @@
syntax = "proto3";
message Config {
// Main/default hostname to use.
// This is used to say hello to clients, and by default as the domain
// we send delivery notifications errors from.
// It should be a domain we can send email from, and we should have a
// certificate for it.
// It usually helps if our IP address resolves to it.
// Default: machine hostname.
// Default hostname to use when saying hello.
// This is used to say hello to clients, for aesthetic purposes.
// Default: the system's hostname.
string hostname = 1;
// Maximum email size, in megabytes.