[Dovecot] Bounce messages

[Steffen Kaiser]

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On Thu, 6 Mar 2014, Thanh Long DANG wrote:

> I just set up my mail server using postfix / dovecot / mysql and it 
> works well. I just have a problem : I'm a trying to have a overquota 
> notification and the server sends nothing (mail server rejects incoming 
> mail).

What do you mean with "the server sends nothing" Which server should send 
what? And should the mail _not_ reject incoming mail, if the user is over 
quota?

If you mean: /usr/local/bin/quota-warning.sh is executed, but postfix does 
not deliver the warning, because the user is overquota; then you need to 
make the script deliver the message in alternate ways:

a) use Dovecot deliver directly with quota disabled
b) spool the message into Maildir directly

> Could you tell me if there is a problem with dovecot or postfix configuration?

postfix+quota config usually contain a quota-status section, like 
described here (German, but the code snippets are significant):
http://sys4.de/de/blog/2013/04/05/dovecot-quota-mit-postfix-abfragen/

> My conf :
>
> # 2.1.7: /etc/dovecot/dovecot.conf
> # OS: Linux 2.6.32-26-pve x86_64 Debian 7.2 simfs
> auth_mechanisms = plain login
> debug_log_path = /var/log/dovecot-debug.log
> dict {
>   quotadict = mysql:/etc/dovecot/dovecot-dict-sql.conf
> }
> disable_plaintext_auth = no
> info_log_path = /var/log/dovecot-info.log
> log_path = /var/log/dovecot.log
> mail_location = maildir:/home/vmail/%d/%n:INDEX=/home/vmail/%d/%n/indexes
> namespace inbox {
>   inbox = yes
>   location =
>   mailbox Drafts {
>     special_use = \Drafts
>   }
>   mailbox Junk {
>     special_use = \Junk
>   }
>   mailbox Sent {
>     special_use = \Sent
>   }
>   mailbox "Sent Messages" {
>     special_use = \Sent
>   }
>   mailbox Trash {
>     special_use = \Trash
>   }
>   prefix =
> }
> passdb {
>   args = /etc/dovecot/dovecot-mysql.conf.ext
>   driver = sql
> }
> plugin {
>   quota = maildir:User quota
>   quota_exceeded_message = Storage quota for this account has been exceeded, please try again later.
>   quota_rule = *:storage=1G
>   quota_rule2 = Trash:storage=+30%%
>   quota_rule3 = Sent:storage=+30%%
>   quota_warning = storage=90%% quota-warning 90 %u
>   quota_warning2 = storage=75%% quota-warning 75 %u
>   sieve = ~/.dovecot.sieve
>   sieve_dir = ~/sieve
> }
> postmaster_address = postmaster at multidist.eu
> protocols = " imap lmtp pop3"
> quota_full_tempfail = yes
> rejection_subject = Rejet: %s
> service auth {
>   unix_listener /var/spool/postfix/private/auth {
>     mode = 0666
>   }
> }
> service dict {
>   unix_listener dict {
>     mode = 0777
>   }
> }
> service lmtp {
>   unix_listener /var/spool/postfix/private/dovecot-lmtp {
>     group = postfix
>     mode = 0666
>     user = postfix
>   }
> }
> service quota-warning {
>   executable = script /usr/local/bin/quota-warning.sh
>   unix_listener quota-warning {
>     mode = 0777
>   }
> }
> ssl_cert = </etc/dovecot/dovecot.pem
> ssl_key = </etc/dovecot/private/dovecot.pem
> userdb {
>   args = /etc/dovecot/dovecot-mysql.conf.ext
>   driver = sql
> }
> verbose_proctitle = yes
> protocol lmtp {
>   mail_plugins = " quota"
> }
> protocol lda {
>   info_log_path = /var/log/dovecot-lda.log
>   log_path = /var/log/dovecot-lda-errors.log
>   mail_plugins = " quota"
> }
> protocol imap {
>   mail_max_userip_connections = 10
>   mail_plugins = quota imap_quota
> }
> protocol pop3 {
>   mail_plugins = quota
>   pop3_uidl_format = %08Xu%08Xv
> }

- -- 
Steffen Kaiser
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