Added Amavis configuration

src/modules/stack/install/mail/ee_mod_install_amavis.sh

@@ -0,0 +1,9 @@
+# Install Amavis package
+
+function ee_mod_install_dovecot()
+{
+	# Install Amavis
+	ee_lib_echo "Installing Amavis, please wait..."
+	$EE_APT_GET amavisd-new spamassassin clamav clamav-daemon arj zoo nomarch cpio lzop cabextract apt-listchanges libauthen-sasl-perl  libdbi-perl libmail-dkim-perl p7zip rpm unrar-free libsnmp-perl \
+	|| ee_lib_error "Unable to install Amavis, exit status = " $?
+}

src/modules/stack/install/mail/ee_mod_setup_amavis.sh

@@ -0,0 +1,16 @@
+# Setup Amavis
+
+function ee_mod_setup_amavis()
+{
+	# Confiure Amavis
+	sed -i "s'#@'@'" /etc/amavis/conf.d/15-content_filter_mode
+	sed -i "s'#   '   '" /etc/amavis/conf.d/15-content_filter_mode
+
+	# Add mail filtering rules
+	sed -i "s/use strict;/use strict;\n\$sa_spam_subject_tag = undef;\n\$spam_quarantine_to  = undef;\n\$sa_tag_level_deflt  = undef;\n\n# Prevent spams from automatically rejected by mail-server\n\$final_spam_destiny  = D_PASS;\n# We need to provide list of domains for which filtering need to be done\n@lookup_sql_dsn = (\n    ['DBI:mysql:database=vimbadmin;host=127.0.0.1;port=3306',\n     'vimbadmin',\n     'password']);\n\n\$sql_select_policy = 'SELECT domain FROM domain WHERE CONCAT("@",domain) IN (%k)';/" /etc/amavis/conf.d/50-user
+
+	# Configure Postfix to use Amavis
+	sed -i "s/1       pickup/1       pickup\n        -o content_filter=\n        -o receive_override_options=no_header_body_checks/" /etc/postfix/master.cf
+	cat /usr/share/easyengine/mail/amavis-master.cf >> /etc/postfix/master.cf
+	
+}

templates/mail/amavis-master.cf

@@ -0,0 +1,24 @@
+smtp-amavis unix -      -       n     -       2  smtp
+    -o smtp_data_done_timeout=1200
+    -o smtp_send_xforward_command=yes
+    -o disable_dns_lookups=yes
+    -o max_use=20
+
+127.0.0.1:10025 inet n    -       n       -       -     smtpd
+    -o content_filter=
+    -o smtpd_delay_reject=no
+    -o smtpd_client_restrictions=permit_mynetworks,reject
+    -o smtpd_helo_restrictions=
+    -o smtpd_sender_restrictions=
+    -o smtpd_recipient_restrictions=permit_mynetworks,reject
+    -o smtpd_data_restrictions=reject_unauth_pipelining
+    -o smtpd_end_of_data_restrictions=
+    -o smtpd_restriction_classes=
+    -o mynetworks=127.0.0.0/8
+    -o smtpd_error_sleep_time=0
+    -o smtpd_soft_error_limit=1001
+    -o smtpd_hard_error_limit=1000
+    -o smtpd_client_connection_count_limit=0
+    -o smtpd_client_connection_rate_limit=0
+    -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks
+    -o local_header_rewrite_clients=