Message to sender when user over quota

Hello,

Installed ISPconfig 3 using

http://www.howtoforge.com/perfect-server-ubuntu-10.04-lucid-lynx-ispconfig-3

For testing reasons i set (ISPconfig 3 control panel):

Code:

Client: Limits: Mailbox quota = 5
Mailbox: Quota = 5

Server config: Mail: Mailbox Size Limit = 5
Server config: Mail: Message Size Limit = 5

Now if im sending email bigger 5mb, i get back email from Mail Delivery System that:

Code:

<[email protected]>: message size 6146320 exceeds size limit 5242880 of
    server bbb.org[111.222.333.444]

But, if i am sending by pieces 1mb, then 5 emails ok, but 6 is not delivered:

Code:

D3004214F7 1393067 Sun May 30 12:27:43 [email protected]
(temporary failure. Command output: ERR: authdaemon: s_connect() failed: Permission denied maildrop: maildir over quota.)
[email protected]

And there is no notification about quota limit reachet or similar.

How to solve this?

 

Tnx for answer, but seems like not solved.

message_size_limit = 20480000 is in main.cf when value saved in ISPconfig.

System:Server Config:Mail:

Mailbox Size Limit = 100 MB
Message Size Limit = 20 MB

Still no answer from server, and it is waiting in queue until mailbox get more free space.

 

What's the output of

Code:

postconf -n

?

 

Code:

root@server:/# postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
body_checks = regexp:/etc/postfix/body_checks
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
content_filter = amavis:[127.0.0.1]:10024
header_checks = regexp:/etc/postfix/header_checks
html_directory = /usr/share/doc/postfix/html
inet_interfaces = all
mailbox_size_limit = 104857600
message_size_limit = 26214400
mime_header_checks = regexp:/etc/postfix/mime_header_checks
mydestination = xxxxxx.com, localhost, localhost.localdomain
myhostname = xxxxxx.com
mynetworks = 127.0.0.0/8 [::1]/128
myorigin = /etc/mailname
nested_header_checks = regexp:/etc/postfix/nested_header_checks
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps
readme_directory = /usr/share/doc/postfix
receive_override_options = no_address_mappings
recipient_delimiter = +
relay_domains = mysql:/etc/postfix/mysql-virtual_relaydomains.cf
relay_recipient_maps = mysql:/etc/postfix/mysql-virtual_relayrecipientmaps.cf
relayhost = 
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_client_restrictions = check_client_access mysql:/etc/postfix/mysql-virtual_client.cf
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf, reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sender_restrictions = check_sender_access mysql:/etc/postfix/mysql-virtual_sender.cf
smtpd_tls_cert_file = /etc/postfix/smtpd.cert
smtpd_tls_key_file = /etc/postfix/smtpd.key
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
transport_maps = proxy:mysql:/etc/postfix/mysql-virtual_transports.cf
virtual_alias_domains = 
virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf
virtual_gid_maps = static:5000
virtual_mailbox_base = /var/vmail
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf
virtual_transport = maildrop
virtual_uid_maps = static:5000

After 5 or 6 days timeout message come back to sender:

Undelivered Mail Returned to Sender

<[email protected]>: temporary failure. Command output: ERR: authdaemon:
s_connect() failed: Permission denied maildrop: maildir over quota.

Maybe somewhere is this timeout setting?

 

Are the 100MB of that mail account full?

 

No, every single mailbox now set to 5mb. But i set every other value bigger than email, to see if there is enough space. I send 5 times by 1mb then next 1mb file is in queue for 5 or 6 days, then sender receive notification, that user over quota. I want to get that work immediately.

Strange thing is, that in main.cf is written:

Code:

virtual_maildir_extended = yes
virtual_mailbox_limit_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailbox_limit_maps.cf
virtual_mailbox_limit_override = yes
virtual_maildir_limit_message = "The user you are trying to reach is over quota."
virtual_overquota_bounce = yes

but in postconf -n it isn't. Why so?

 

If the users mailbox is over quota, postfix will keep trying to deliver the mail for 5 days (default) at growing intervals, at which point it will then respond back to the send saying mail can't be delivered.

 

Sorry I needed to add, this is because ISPC use disk quota's and not quota's at postfix level.

hence when you reach 5mb, postfix or maildrop can write the mail into the users mailbox as he has run out of space and after 5 days if will return and NDR.

if you were to change the
mailbox_size_limit = 104857600
to
mailbox_size_limit = 5242880

this will then have the effect you are looking for, but this will then do teh same to all mailboxes on your server

 

Found that if i change in postfix

bounce_queue_lifetime = 5d
maximal_queue_lifetime = 5d

to

bounce_queue_lifetime = 0
maximal_queue_lifetime = 0

Now problem solved, only dont know other problems this can cause.

 

the problem with this is if your MTA tries to send a mail to a server which is temp. unavaliable it will instatly bounce the message.
I have reduce my setting from 5d to 1d, this will ensure that the mail delivery is apttempted for atleast 1 day before bouncing it