[horde] how to enable delivery notification when composing message

[A. Schulze]

Am 11.03.20 um 11:53 schrieb Young, Julia:

> Is there a way to enable delivery notifications in IMP 6.2.22 when composing
> a message? There is a "read receipt" checkbox, which works, but i would like
> to have the delivery itself confirmed without any interaction needed from
> the recipient. 

Hello Julia,

sounds like you're looking for Delivery Status Notification per RFC 3461
(https://tools.ietf.org/html/rfc3461)

It's not as easy to find a MUA supporting the SMTP extension.
If you're an SMTP native speaker, https://tools.ietf.org/html/rfc3461#page-27 give you an impression.

My personal solution: a submission server injecting the necessary SMTP Parameter for /every/ message I send.
It's build with postfix:

master.cf:
  submission inet  n - n - - smtpd
   -o smtpd_command_filter=pcre:${config_directory}/smtpd_command_filter.pcre
   -o $other_options (see https://github.com/vdukhovni/postfix/blob/master/postfix/conf/master.cf#L17)

smtpd_command_filter.pcre:
  #
  # https://marc.info/?l=postfix-users&m=139333445015239
  # and Update
  # https://marc.info/?t=141581148400004
  # https://tools.ietf.org/html/rfc3461#section-4.1
  #
  /^(RCPT\s+TO:\s*<.*>.*\s+NOTIFY=.*)/ $1
  /^(RCPT\s+TO:\s*<.*>.*)/ $1 NOTIFY=SUCCESS,DELAY,FAILURE

No idea if that scale for millions of submissions.
And back to your question: I also would love to see support in my MUAs message compose form :-)

Andreas