On 01 Dec 2015, at 17:10, Antonello Cioffi antonello.cioffi@uniparthenope.it wrote:
Hi
I'm using postfix+dovecot (2.2.18).
The problem is that dovecot silently discard message when user has its own mailbox full without sending rejection message to the sender.
Here a sample log:
Dec 1 14:54:23 posta2 postfix/smtp[21478]: B315111C00B: to=antonen@uniparthenope.it, relay=192.168.241.110[192.168.241.110]:25, delay=0.4, delays=0.2/0/0/0.2, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as C27BF1244DD) Dec 1 14:54:23 posta2 dovecot: lda(antonen): Error: sieve: msgid=565DA68E.8060308@uniparthenope.it: failed to store into mailbox 'INBOX': Quota exceeded (mailbox for user is full) Dec 1 14:54:23 posta2 dovecot: lda(antonen): sieve: Execution of script /usr/local/etc/dovecot/sieve/default.sieve failed with unsuccessful implicit keep Dec 1 14:54:23 posta2 dovecot: lda(antonen): msgid=565DA68E.8060308@uniparthenope.it: rejected: Quota exceeded (mailbox for user is full) Dec 1 14:54:23 posta2 postfix/pipe[21020]: 111FB11C00B: to=antonen@uniparthenope.it, relay=dovecot, delay=0.14, delays=0.05/0.01/0/0.09, dsn=2.0.0, status=sent (delivered via dovecot service)
Dovecot should have sent a bounce message at that time. I guess that doesn't work for some reason. By default Dovecot uses:
sendmail_path = /usr/sbin/sendmail
Also you can instead have it send it via SMTP by setting submission_host setting. And finally if you give -e parameter to dovecot-lda, it won't send a bounce itself but instead will exit with 77 causing Postfix to send the bounce.