Servidor de E-mail · 3 min read · Dec 31, 2025

Servidor de Groupware Com Group-Office, Postfix, Dovecot E SpamAssassin No Debian Lenny (5.0) - Página 2

Configurar Postfix

Postfix deve ser configurado para usar MySQL:

As seguintes variáveis em main.cf. Comece preenchendo algumas informações básicas:

# postconf -e 'myhostname = mx-1.example.com'  
# postconf -e 'smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)'  
# postconf -e 'biff = no'  
# postconf -e 'append_dot_mydomain = no'  
# postconf -e 'myorigin = example.com'  
# postconf -e 'mydestination = $myhostname, localhost, locahost.localdomain'  
# postconf -e 'mynetworks = 127.0.0.0/8'  
# postconf -e 'recipient_delimiter = +'  
# postconf -e 'inet_interfaces = all'  
# postconf -e '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'   
  
# postconf -e 'smtpd_recipient_restrictions = \  
    permit_mynetworks, \  
    reject_unauth_destination, \  
    reject_rbl_client zen.spamhaus.org, \  
    reject_rbl_client list.dsbl.org, \  
    permit'  
# postconf -e 'message_size_limit=52428800'  
# postconf -e 'mailbox_size_limit=0'

Agora configure-o para usuários virtuais no MySQL:

# postconf -e 'virtual_alias_domains ='  
# postconf -e 'virtual_alias_maps = proxy:mysql:$config_directory/mysql_virtual_alias_maps.cf'  
# postconf -e 'virtual_mailbox_domains = proxy:mysql:$config_directory/mysql_virtual_domains_maps.cf'  
# postconf -e 'virtual_mailbox_maps = proxy:mysql:$config_directory/mysql_virtual_mailbox_maps.cf'  
# postconf -e 'virtual_mailbox_base = /vmail'  
# postconf -e 'virtual_minimum_uid = 150'  
# postconf -e 'virtual_uid_maps = static:150'  
# postconf -e 'virtual_gid_maps = static:8'  
# postconf -e 'virtual_create_maildirsize = yes'  
# postconf -e 'virtual_mailbox_extended = yes'  
# postconf -e 'virtual_mailbox_limit_maps = proxy:mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf'  
# postconf -e 'virtual_mailbox_limit_override = yes'  
# postconf -e 'virtual_maildir_limit_message = "O usuário que você está tentando alcançar excedeu sua cota."'  
# postconf -e 'virtual_overquota_bounce = yes'  
# postconf -e 'transport_maps = proxy:mysql:/etc/postfix/mysql_virtual_transports.cf'  
# postconf -e 'relay_domains = proxy:mysql:/etc/postfix/mysql_relay_domains_maps.cf'

Usaremos a entrega do Dovecot:

# postconf -e 'virtual_transport=dovecot'  
# postconf -e 'dovecot_destination_recipient_limit=1'  
# postconf -e 'transport_maps = hash:/etc/postfix/transport'  
# postconf -e 'smtpd_data_restrictions = reject_unauth_pipelining, reject_multi_recipient_bounce, permit'  
# postconf -e 'vacation_destination_recipient_limit = 1'

Crie o banco de dados de transporte:

# cd /etc/postfix  
# postmap transport

O Postfix foi instalado com suporte a MySQL, mas isso não significa que ele já sabe como usar nosso banco de dados. Ele precisa ser fornecido com várias informações de consulta SQL para cada tipo de tabela em nosso banco de dados. Essas informações estão armazenadas nos arquivos MySQL definidos no arquivo main.cf:

/etc/postfix/mysql_virtual_alias_maps.cf:

user = vmail_user
password = vmail_user_password
hosts = localhost
dbname = groupoffice
table = pa_aliases
select_field = goto
where_field = address
additional_conditions = and active = '1'

/etc/postfix/mysql_virtual_domains_maps.cf:

user = vmail_user
password = vmail_user_password
hosts = localhost
dbname = groupoffice
table = pa_domains
select_field = domain
where_field = domain
additional_conditions = and backupmx = '0' and active = '1'

/etc/postfix/mysql_virtual_mailbox_limit_maps.cf:

user = vmail_user
password = vmail_user_password
hosts = localhost
dbname = groupoffice
table = pa_mailboxes
select_field = quota
where_field = username
additional_conditions = and active = '1'

/etc/postfix/mysql_virtual_mailbox_maps.cf:

user = vmail_user
password = vmail_user_password
hosts = localhost
dbname = groupoffice
table = pa_mailboxes
select_field = maildir
where_field = username
additional_conditions = and active = '1'

/etc/postfix/mysql_virtual_transports.cf:

user = vmail_user
password = vmail_user_password
hosts = localhost
dbname = groupoffice
table = pa_domains
select_field = transport
where_field = domain
additional_conditions = and active = '1'

/etc/postfix/mysql_relay_domains_maps.cf:

user = vmail_user
password = vmail_user_password
hosts = localhost
dbname = groupoffice
table = pa_domains
select_field = domain
where_field = domain
additional_conditions = and backupmx = '1' and active = '1'

Adicione o usuário de e-mail:

# useradd -r -u 150 -g mail -d /var/vmail -s /sbin/nologin -c "Caixa de Correio Virtual" vmail  
# mkdir /vmail  
# chmod 770 /vmail/  
# chown vmail:mail /vmail/

Edite o master.cf do Postfix:

Altere a primeira linha com o serviço smtp:

smtp      inet  n       -       -       -       -       smtpd
    -o content_filter=spamassassin

Após essa linha adicione:

spamassassin unix -     n       n       -       -       pipe
    user=spamd argv=/usr/bin/spamc -f -e
    /usr/sbin/sendmail -oi -f ${sender} ${recipient}
dovecot   unix  -       n       n       -       -       pipe
    flags=DRhu user=vmail:mail argv=/usr/lib/dovecot/deliver -d ${recipient}

Nas interfaces para software não Postfix adicione:

vacation    unix  -       n       n       -       -       pipe
  flags=Rq user=vacation argv=/var/spool/vacation/vacation.pl -f ${sender} -- ${recipient}
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