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Upgrade iRedMail from 0.9.7 to 0.9.8

ChangeLog

• TODO [SQL backends] Update SQL structure:
  • New column: domain.maillists
  • New column: forwardings.is_maillist
  • New table: vmail.maillists
  • New doc: how to add a standalone (mlmmj) mailing list account
  • New doc: how to deploy mlmmj + mlmmj-admin
• Jan 31, 2018: Fail2ban: new jail postfix-pregreet.
• Jan 21, 2018: [LDAP] Update SOGo config file for per-domain global address book.
• Jan 19, 2018: Update OpenLDAP config file to index new attributes and fix an ACL.
• Jan 19, 2018: Update iRedMail LDAP schema file
• Dec 18, 2017: Don't hard-code static file types in Nginx template for iRedAdmin.
• Nov 24, 2017: Amavisd: Add new SQL column maddr.email_raw to store mail address without address extension.
• Nov 17, 2017: Fixed: Improper Postfix SQL queries used to query per-user bcc address.
• Oct 6, 2017: Fixed: SOGo backup script contains 3 issues
• Oct 6, 2017: [OPTIONAL] Fix improper expected DNSBL filter for site b.barracudacentral.org
• Oct 6, 2017: [OPTIONAL] Log mail subject, sender, size in mail deliver log.

General (All backends should apply these steps)

Update /etc/iredmail-release with new iRedMail version number

iRedMail stores the release version in /etc/iredmail-release after installation, it's recommended to update this file after you upgraded iRedMail, so that you can know which version of iRedMail you're running. For example:

0.9.7

Upgrade iRedAPD (Postfix policy server) to the latest stable release (2.2)

Please follow below tutorial to upgrade iRedAPD to the latest stable release: Upgrade iRedAPD to the latest stable release

Fixed: SOGo backup script contains 3 issues

SOGo backup script /var/vmail/backup/backup_sogo.sh shipped in iRedMail-0.9.7 and earlier releases contains 3 issues:

• it cannot remove old backup files
• it doesn't set correct owner and permission on backup files
• it cannot find command sogo-tool on FreeBSD. This issue causes our script didn't backup any sogo data on FreeBSD at all.

To fix them, please download the latest version and override the one on your system:

cd /var/vmail/backup/
wget https://bitbucket.org/zhb/iredmail/raw/default/iRedMail/tools/backup_sogo.sh
chown root backup_sogo.sh
chmod 0400 backup_sogo.sh

Fail2ban: new jail postfix-pregreet

Quote from Postfix website:

The SMTP protocol is a classic example of a protocol where the server speaks before the client. postscreen(8) detects zombies that are in a hurry and that speak before their turn.

Many spammers are in a hurry to transfer message to your server, we'd like to block them due to not follow RFC.

During mail server maintenance, we found many spammers from China mainland cannot pass this pregreet test and all of them use ylmf-pc as HELO hostname. it's very possible that they're running an illegal Windows XP system which were installed with a malware Windows XP ISO image.

Steps to create this new Fail2ban jail:

• Create new file /etc/fail2ban/filter.d/postfix-pregreet.conf with content below:

[Definition]

# Block clients which cannot pass Postfix postscreen pregreet test.
# FYI: http://www.postfix.org/POSTSCREEN_README.html#pregreet
#
# The SMTP protocol is a classic example of a protocol where the server speaks
# before the client. postscreen(8) detects zombies that are in a hurry and that
# speak before their turn.
failregex = postscreen\[\d+\]: PREGREET .* from \[<HOST>\]:\d+:

# while setting up new account, Thunderbird doesn't wait for server connection
# greeting/banner, this causes Thunderbird cannot pass the Postfix pregreet
# test and caught by `failregex` rules listed above (the rule contains
# 'PREGREET' line).
# FYI: https://bugzilla.mozilla.org/show_bug.cgi?id=538809#c41
ignoreregex = postscreen\[\d+\]: PREGREET .* from \[<HOST>\]:\d+: (EHLO|HELO) we-guess.mozilla.org

• Create new file /etc/fail2ban/jail.d/postfix-pregreet.local with content below:

  Attention

  Please make sure you're using correct Postfix log file in logpath = parameter. On RHEL/CentOS/FreeBSD, it's /var/log/maillog. On Debian/Ubuntu, it's /var/log/mail.log.

[postfix-pregreet-iredmail]
enabled     = true
filter      = postfix-pregreet.iredmail
logpath     = /var/log/maillog
maxretry    = 1
action      = iptables-multiports[name=postfix, port="25", protocol=tcp]

• Restarting Fail2ban service is required.

Fixed: Nginx snippet file hard-codes static file types for iRedAdmin

With default iRedMail settings, Nginx snippet file /etc/nginx/templates/iredadmin.tmpl (on Linux/OpenBSD) or /usr/local/etc/nginx/templates/iredadmin.tmpl (on FreeBSD) hard-codes static file types like below:

location ~ ^/iredadmin/static/(.*)\.(png|jpg|gif|css|js) {
    alias /var/www/iredadmin/static/$1.$2;
}

Note: The path in alias directive is different on different Linux/BSD distributions.

Please replace it by:

location ~ ^/iredadmin/static/(.*) {            # Remove file types
    alias /var/www/iredadmin/static/$1;         # Remove '.$2'
}

Reloading or restarting Nginx service is required.

Fix unexpected DNSBL query result for site b.barracudacentral.org

Postfix config file generated by iRedMail enables DNSBL service for postscreen service like below:

postscreen_dnsbl_sites =
    zen.spamhaus.org=127.0.0.[2..11]*3
    b.barracudacentral.org=127.0.0.[2..11]*2

but site b.barracudacentral.org returns only domain 127.0.0.2 (instead of a range from 127.0.0.2 to 127.0.0.11), so we should change the b.barracudacentral.org=127.0.0.[2..11]*2 line to:

postscreen_dnsbl_sites =
    zen.spamhaus.org=127.0.0.[2..11]*3
    b.barracudacentral.org=127.0.0.2*2

Reloading or restarting Postfix is required.

[OPTIONAL] Log mail subject, sender, size in mail deliver log

If you may need to get more info of (locally) delivered mail messages, Dovecot setting deliver_log_format can log extra mail subject, sender, and message size in mail deliver log. Please append this setting in Dovecot config file dovecot.conf, then restart or reload Dovecot service. On Linux/OpenBSD, it's /etc/dovecot/dovecot.conf On FreeBSD, it's /usr/local/etc/dovecot/dovecot.conf

deliver_log_format = from=%{from}, envelope_sender=%{from_envelope}, subject=%{subject}, msgid=%m, size=%{size}, %$

OpenLDAP backend

Update OpenLDAP config file to index new attributes and fix an ACL

• Please open OpenLDAP config file slapd.conf:

  • On RHEL/CentOS, it's /etc/openldap/slapd.conf
  • On Debian/Ubuntu, it's /etc/ldap/slapd.conf
  • On FreeBSD, it's /usr/local/etc/openldap/slapd.conf
  • On OpenBSD:
    • if you're running OpenLDAP, it's /etc/openldap/slapd.conf.
    • if you're running ldapd(8) as LDAP server, no need to fix ACL issue (access to dn.subtree=), but still need to index new attributes.

• find lines below:

access to dn.subtree="o=domains,dc=xxx,dc=xxx"
    by anonymous                    auth
    by self                         write
    by dn.exact="cn=vmail,dc=xxx,dc=xxx"    read
    by dn.exact="cn=vmailadmin,dc=xxx,dc=xxx"  write
    by users                        none

Replace the last line by users none by:

   by users read

• Append lines below to the end of OpenLDAP config file slapd.conf:

index member,uniqueMember eq,pres
index mailingListID eq

index member
index uniqueMember
index mailingListID

Update iRedMail LDAP schema file

iRedMail-0.9.8 introduces 1 new LDAP attribute for mailing list account:

• mailingListID: used to store a server-wide unique id, currently is used for mailing list subscription/unsubscription (a.k.a. newsletter).

Download the latest iRedMail LDAP schema file

• On RHEL/CentOS:

cd /tmp
wget https://bitbucket.org/zhb/iredmail/raw/default/iRedMail/samples/iredmail/iredmail.schema

cd /etc/openldap/schema/
cp iredmail.schema iredmail.schema.bak

cp -f /tmp/iredmail.schema /etc/openldap/schema/

• On Debian/Ubuntu:

cd /tmp
wget https://bitbucket.org/zhb/iredmail/raw/default/iRedMail/samples/iredmail/iredmail.schema

cd /etc/ldap/schema/
cp iredmail.schema iredmail.schema.bak

cp -f /tmp/iredmail.schema /etc/ldap/schema/

• On FreeBSD:

cd /tmp
wget https://bitbucket.org/zhb/iredmail/raw/default/iRedMail/samples/iredmail/iredmail.schema

cd /usr/local/etc/openldap/schema/
cp iredmail.schema iredmail.schema.bak

cp -f /tmp/iredmail.schema /usr/local/etc/openldap/schema/

• On OpenBSD:

  Note: if you're running ldapd as LDAP server, the schema directory is /etc/ldap, and service name is ldapd.

cd /tmp
ftp https://bitbucket.org/zhb/iredmail/raw/default/iRedMail/samples/iredmail/iredmail.schema

cd /etc/openldap/schema/
cp iredmail.schema iredmail.schema.bak

cp -f /tmp/iredmail.schema /etc/openldap/schema/

Amavisd: Add new SQL column maddr.email_raw to store mail address without address extension

Many sender/recipient addresses contain address extension like user+extension@domain.com, this is annoying if we try to get top 10 senders/recipients from Amavisd SQL database, because address user+ext1@domain.com and user+ext2@domain.com are considered as different user. To avoid this issue, we create a SQL trigger to store email address without address extension in a new column maddr.email_raw. Please follow steps below to apply the SQL structure change.

• Download SQL template file used to update SQL database:

cd /tmp/
wget https://bitbucket.org/zhb/iredmail/raw/default/extra/update/0.9.8/amavisd.mysql

• Connect to MySQL server as MySQL root user, and execute SQL commands:

$ mysql amavisd
mysql> SOURCE /tmp/amavisd.mysql;

Update SOGo config file for per-domain global address book

SOGo is configured by iRedMail to query all users on server while performing account search (e.g. global address book, meeting attendees), this may be not what you expect if you host multiple mail domains and they should not see others on same server. Please follow steps below to fix it.

• Open SOGo config file /etc/sogo/sogo.conf (Linux/OpenBSD) or /usr/local/etc/sogo/sogo.conf (FreeBSD), find lines like below:

        {
            // Used for global address book
            type = ldap;
            id = global_addressbook;
            canAuthenticate = NO;
            isAddressBook = YES;
            displayName = "Global Address Book";

• Add one line after the displayName = line:

            bindAsCurrentUser = YES;

• Restarting SOGo service is required to apply this change.

MySQL/MariaDB backends

Fixed: User under disabled domain is able to send email with smtp protocol

Dovecot is IMAP/POP3/Managesieve server, also a SASL auth server for Postfix. If mail domain is disabled, users under this domain are not able to use IMAP/POP3/Managesieve services, but there's a bug in Dovecot SQL query configured by iRedMail, it doesn't check domain status while performing smtp sasl auth. Please follow steps below to fix it.

• Open file /etc/dovecot/dovecot-mysql.conf (Linux/OpenBSD) or /usr/local/etc/dovecot/dovecot-mysql.conf (FreeBSD), find the password_query line like below:

password_query = SELECT password, allow_nets FROM mailbox WHERE username='%u' AND enable%Ls%Lc=1 AND active=1

• Replace it by lines below:

password_query = SELECT mailbox.password, mailbox.allow_nets \
        FROM mailbox,domain \
       WHERE mailbox.username='%u' \
             AND mailbox.`enable%Ls%Lc`=1 \
             AND mailbox.active=1 \
             AND mailbox.domain=domain.domain \
             AND domain.backupmx=0 \
             AND domain.active=1

• Save your change and restart Dovecot service.

Fixed: Improper Postfix SQL queries used to query per-user bcc address.

There're 2 Postfix SQL queries configured by iRedMail are improper, they won't return per-user bcc address. Please follow steps below to fix it:

• Open file /etc/postfix/mysql/recipient_bcc_maps_user.cf (Linux/OpenBSD) or /usr/local/etc/postfix/mysql/recipient_bcc_maps_user.cf (FreeBSD), REPLACE the query = line by lines below:

query       = SELECT recipient_bcc_user.bcc_address
                FROM recipient_bcc_user,domain,alias_domain
               WHERE recipient_bcc_user.username='%s'
                     AND recipient_bcc_user.domain='%d'
                     AND ((recipient_bcc_user.domain=domain.domain)
                          OR (recipient_bcc_user.domain=alias_domain.alias_domain AND domain.domain = alias_domain.target_domain))
                     AND domain.backupmx=0
                     AND domain.active=1
                     AND recipient_bcc_user.active=1

• Open file /etc/postfix/mysql/sender_bcc_maps_user.cf (Linux/OpenBSD) or /usr/local/etc/postfix/mysql/sender_bcc_maps_user.cf (FreeBSD), REPLACE the query = line by lines below:

query       = SELECT sender_bcc_user.bcc_address
                FROM sender_bcc_user,domain,alias_domain
               WHERE sender_bcc_user.username='%s'
                     AND sender_bcc_user.domain='%d'
                     AND ((sender_bcc_user.domain=domain.domain)
                          OR (sender_bcc_user.domain=alias_domain.alias_domain AND domain.domain = alias_domain.target_domain))
                     AND domain.backupmx=0
                     AND domain.active=1
                     AND sender_bcc_user.active=1

• Save your changes and restart Postfix service.

Amavisd: Add new SQL column maddr.email_raw to store mail address without address extension

Many sender/recipient addresses contain address extension like user+extension@domain.com, this is annoying if we try to get top 10 senders/recipients from Amavisd SQL database, because address user+ext1@domain.com and user+ext2@domain.com should be considered as same user, but it's not. To avoid this issue, we create a SQL trigger to store email address without address extension in a new column maddr.email_raw. Steps:

• Download SQL template file used to update SQL database:

cd /tmp/
wget https://bitbucket.org/zhb/iredmail/raw/default/extra/update/0.9.8/amavisd.mysql

• Connect to MySQL server as MySQL root user, and execute SQL commands:

# mysql amavisd
sql> SOURCE /tmp/amavisd.mysql;

PostgreSQL backend

Fixed: User under disabled domain is able to send email with smtp protocol

Dovecot is IMAP/POP3/Managesieve server, also a SASL auth server for Postfix. If mail domain is disabled, users under this domain are not able to use IMAP/POP3/Managesieve services, but there's a bug in Dovecot SQL query configured by iRedMail, it doesn't check domain status while performing smtp sasl auth. Please follow steps below to fix it.

• Open file /etc/dovecot/dovecot-pgsql.conf (Linux/OpenBSD) or /usr/local/etc/dovecot/dovecot-pgsql.conf (FreeBSD), find the password_query line like below:

password_query = SELECT password, allow_nets FROM mailbox WHERE username='%u' AND enable%Ls%Lc=1 AND active=1

• Replace it by lines below:

password_query = SELECT mailbox.password, mailbox.allow_nets \
        FROM mailbox,domain \
       WHERE mailbox.username='%u' \
             AND mailbox."enable%Ls%Lc"=1 \
             AND mailbox.active=1 \
             AND mailbox.domain=domain.domain \
             AND domain.backupmx=0 \
             AND domain.active=1

• Save your change and restart Dovecot service.

Fixed: Improper Postfix SQL queries used to query per-user bcc address.

There're 2 Postfix SQL queries configured by iRedMail are improper, they won't return per-user bcc address. Please follow steps below to fix it:

• Open file /etc/postfix/pgsql/recipient_bcc_maps_user.cf (Linux/OpenBSD) or /usr/local/etc/postfix/pgsql/recipient_bcc_maps_user.cf (FreeBSD), REPLACE the query = line by lines below:

query       = SELECT recipient_bcc_user.bcc_address
                FROM recipient_bcc_user,domain,alias_domain
               WHERE recipient_bcc_user.username='%s'
                     AND recipient_bcc_user.domain='%d'
                     AND ((recipient_bcc_user.domain=domain.domain)
                          OR (recipient_bcc_user.domain=alias_domain.alias_domain AND domain.domain = alias_domain.target_domain))
                     AND domain.backupmx=0
                     AND domain.active=1
                     AND recipient_bcc_user.active=1

• Open file /etc/postfix/pgsql/sender_bcc_maps_user.cf, REPLACE the query = line by lines below:

query       = SELECT sender_bcc_user.bcc_address
                FROM sender_bcc_user,domain,alias_domain
               WHERE sender_bcc_user.username='%s'
                     AND sender_bcc_user.domain='%d'
                     AND ((sender_bcc_user.domain=domain.domain)
                          OR (sender_bcc_user.domain=alias_domain.alias_domain AND domain.domain = alias_domain.target_domain))
                     AND domain.backupmx=0
                     AND domain.active=1
                     AND sender_bcc_user.active=1

• Save your changes and restart Postfix service.

Amavisd: Add new SQL column maddr.email_raw to store mail address without address extension

Many sender/recipient addresses contain address extension like user+extension@domain.com, this is annoying if we try to get top 10 senders/recipients from Amavisd SQL database, because address user+ext1@domain.com and user+ext2@domain.com should be considered as same user, but it's not. To avoid this issue, we create a SQL trigger to store email address without address extension in a new column maddr.email_raw. Steps:

• Download SQL template file used to update SQL database:

cd /tmp/
wget https://bitbucket.org/zhb/iredmail/raw/default/extra/update/0.9.8/amavisd.pgsql

• Run shell commands as root user below to connect to PostgreSQL server:

# su - postgres
$ psql -U amavisd -d vmail
sql> \i /tmp/amavisd.pgsql