Hello,
I am using postfix-2.10.1-6.el7 and set "double_bounce_sender = double -
bounce".
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?
Do you want to discard single bounce by default?
------------------------------------
Feb 20 15:59:34 hoge postfix / pickup [3714]: A75EF28D536: uid = 0 from =
<root>
Feb 20 15:59:34 hoge postfix / cleanup [4098]: A75EF28D536: message-id = <
20190220065934.a75ef28d...@hoge1.example.com>
Feb 20 15:59:34 hoge postfix / qmgr [3715]: A75EF28D536: from = <
r...@example.com>, size = 464, nrcpt = 1 (queue active)
Feb 20 15:59:34 hoge postfix / smtp [4100]: A75EF28D536: to = <
bananah...@hoge2.example.com>, relay = hoge2.example.com [xx.xxxxx]: 25,
delay = 0.1, delays = 0.04 / 0.01 / 0.03 / 0.02, dsn = 5.1.1, status =
bounced (host hoge2.example.com [xx.xxxxx] said: 550 5.1.1 <
bananah...@hoge2.example.com>: Recipient address rejected : User unknown in
local recipient table (in reply to RCPT TO command))
Feb 20 15:59:34 hoge postfix / cleanup [4098]: B9B 3628 D 539: message-id =
<20190220065934.b9b3628d...@hoge1.example.com>
Feb 20 15:59:34 hoge postfix / qmgr [3715]: B 9 B 3628 D 539: from = <>,
size = 2614, nrcpt = 1 (queue active)
Feb 20 15:59:34 hoge postfix / bounce [4101]: A 75 EF 28 D 536: sender
non-delivery notification: B 9 B 3628 D 539
Feb 20 15: 59: 34 hoge postfix / qmgr [3715]: A 75 EF 28 D 536: removed
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)
Feb 20 15: 59: 34 hoge postfix / qmgr [3715]: B 9 B 3628 D 539: removed
------------------------------------
· About double bounce
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.
----------------------------------
# vi mail_body
HELLO
# cat mail_body | sendmail -oi -f hog...@hoge1.example.com
hog...@hoge2.example.com
Feb 20 16:21:01 hoge postfix/pickup[3714]: 023B228D536: uid=0 from=<
hog...@hoge1.example.com>
Feb 20 16:21:01 hoge postfix/cleanup[4336]: 023B228D536: message-id=<
20190220072101.023b228d...@hoge1.example.com>
Feb 20 16:21:01 hoge postfix/qmgr[3715]: 023B228D536: from=<
hog...@hoge1.example.com>, size=303, nrcpt=1 (queue active)
Feb 20 16:21:01 hoge postfix/smtp[4338]: 023B228D536: to=<
hog...@hoge2.example.com>, relay=hoge2.example.com[xx.x.x.xxx]:25,
delay=0.01, delays=0.01/0/0/0, dsn=5.1.1, status=bounced (host
hoge2.example.com[xx.x.x.xxx] said: 550 5.1.1 <hog...@hoge2.example.com>:
Recipient address rejected: User unknown in local recipient table (in reply
to RCPT TO command))
Feb 20 16:21:01 hoge postfix/cleanup[4336]: 0581728D539: message-id=<
20190220072101.0581728d...@hoge1.example.com>
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")
Feb 20 16:21:01 hoge postfix/qmgr[3715]: 0581728D539: removed
----------------------------------
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?
Or should I set something?
I am waiting for reply.
Thank you.
