Thank you for your reply.

>your mail is quite hard to read.
> it would be great to use mail client that does not random spaces around
> dashes, slashes, equal signs etc. and even to queue IDs.
> ... and does not wrap log lines.

I'm sorry. I will be careful.
Thank you for your reply despite difficulty reading.

> the double bounce did not occur, at least not in the logs above.

I would like to generate double bounce in the verification environment, but
how do I do it?
(I thought that double bounce would occur if sending mail with a mail
address that does not exist as a sender and a recipient.)

If double bounce occurs, will it be output to the log?
Will not output such as "from = <double-bou...@xxxx.com>"?
If nothing is output, how do you decide whether double bounce occurred?

I am waiting for reply.
Thank you.

2019年2月20日(水) 18:25 Matus UHLAR - fantomas <uh...@fantomas.sk>:

> On 20.02.19 16:49, natsu wrote:
> >I am using postfix-2.10.1-6.el7 and set "double_bounce_sender = double -
> >bounce".
>
> your mail is quite hard to read.
> it would be great to use mail client that does not random spaces around
> dashes, slashes, equal signs etc. and even to queue IDs.
> ... and does not wrap log lines.
>
> >Let me question about single bounce and double bounce.
> >
> >· About single bounce
> >
> >Sending to a mail address that does not exist results in a single bounce.
> >The single bounce was recorded in the mail log as shown below.
> >The sender address is empty ("from = <>"), I realize this is a
> >specification, is it correct?
>
> yes
>
> >Do you want to discard single bounce by default?
>
> yes. They are designed so to avoid endeless mail loops.
>
> >Feb 20 15:59:34 hoge postfix / local [4102]: B 9 B 3628 D 539: to = <
> >r...@example.com>, relay = local, delay = 0.02, delays = 0 / 0.01 / 0 /
> >0.01, dsn = 2.0.0 , status = sent (delivered to maildir)
>
> horrible...
>
> >I thought that double bounce would be generated by sending mail with a
> mail
> >address that does not exist as a sender and destination, but the following
> >log was output.
>
> >Feb 20 16:21:01 hoge postfix/pickup[3714]: 023B228D536: uid=0 from=<
> >hog...@hoge1.example.com>
>
> this is the original mail
>
> >Feb 20 16:21:01 hoge postfix/qmgr[3715]: 0581728D539: from=<>, size=2497,
> >nrcpt=1 (queue active)
> >Feb 20 16:21:01 hoge postfix/bounce[4339]: 023B228D536: sender
> non-delivery
> >notification: 0581728D539
> >Feb 20 16:21:01 hoge postfix/qmgr[3715]: 023B228D536: removed
> >Feb 20 16:21:01 hoge postfix/local[4340]: 0581728D539: to=<
> >hog...@hoge1.example.com>, relay=local, delay=0, delays=0/0/0/0,
> dsn=5.1.1,
> >status=bounced (unknown user: "hoge11")
>
>
> and this is the bounce from <> to original sender.
>
> >When double bounce occurred, I thought that "from = <double-
> bou...@xxxx.com>"
> >would be output, but as far as I confirmed it was "from = <>". If double
> >bounce occurs, will not "from = <double-bou...@xxxx.com>" appear?
>
> the double bounce did not occur, at least not in the logs above.
>
> --
> Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
> Warning: I wish NOT to receive e-mail advertising to this address.
> Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
> Linux IS user friendly, it's just selective who its friends are...
>

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