implement "future release"

the smtp extension, rfc 4865.
also implement in the webmail.
the queueing/delivery part hardly required changes: we just set the first
delivery time in the future instead of immediately.

still have to find the first client that implements it.
This commit is contained in:
Mechiel Lukkien
2024-02-10 17:55:56 +01:00
parent 17734196e3
commit 93c52b01a0
19 changed files with 382 additions and 54 deletions

View File

@ -48,6 +48,12 @@ type Message struct {
// mail user-agents will thread the DSN with the original message.
References string
// For message submitted with FUTURERELEASE SMTP extension. Value is either "for;"
// plus original interval in seconds or "until;" plus original UTC RFC3339
// date-time.
FutureReleaseRequest string
// ../rfc/4865:315
// Human-readable text explaining the failure. Line endings should be
// bare newlines, not \r\n. They are converted to \r\n when composing.
TextBody string
@ -230,6 +236,10 @@ func (m *Message) Compose(log mlog.Log, smtputf8 bool) ([]byte, error) {
status("Received-From-MTA", fmt.Sprintf("dns;%s (%s)", m.ReceivedFromMTA.Name, smtp.AddressLiteral(m.ReceivedFromMTA.ConnIP)))
}
status("Arrival-Date", m.ArrivalDate.Format(message.RFC5322Z)) // ../rfc/3464:758
if m.FutureReleaseRequest != "" {
// ../rfc/4865:320
status("Future-Release-Request", m.FutureReleaseRequest)
}
// Then per-recipient fields. ../rfc/3464:769
// todo: should also handle other address types. at least recognize "unknown". Probably just store this field. ../rfc/3464:819