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====Internal Mail Servers====
====qpsmtpd====
SME can be configured as a spam and antivirus filter for one or more "Internal" mail servers on a domain-by-domain basis. The mail server specified does not have to be on the same local network as your SME server.
SME uses the [http://smtpd.develooper.com qpsmtpd] smtp daemon.
=====Deliver ALL email to a single internal mail server=====
=====Official Description=====
qpsmtpd is a flexible smtpd daemon written in Perl. Apart from the core SMTP features, all functionality is implemented in small "extension plugins" using the easy to use object oriented plugin API.
qpsmtpd was originally written as a drop-in qmail-smtpd replacement, but now it also includes smtp forward, postfix, exim and maildir "backends".
qpsmtpd wiki: http://wiki.qpsmtpd.org
=====Default Plugin Configuration=====
=====Default Plugin Configuration=====
When configured to deliver email to an internal mail server, SME will use the following [http://wiki.qpsmtpd.org/plugins| qpsmtpd plugins] to evaluate each incoming email:
When configured to deliver email to an internal mail server, SME will use the following [http://wiki.qpsmtpd.org/plugins qpsmtpd plugins] to evaluate each incoming email:
{| style="color:brown;background-color:#ffffcc;" border="1" cellpadding="5" cellspacing="0"
{| style="color:brown;background-color:#ffffcc;" border="1" cellpadding="5" cellspacing="0"
!Plugin
!Plugin
|-
|-
|hosts_allow
|hosts_allow
|Allow connections from 'allowhosts', Deny connections from 'denyhosts', and limit connections from a single host according to the setting of 'config setprop smtp InstancesPerIP'
|Prohibit more than "InstancesPerIP" connections from any single host (change with 'config setprop smtp InstancesPerIP'). Allow or deny connections according to the contents of /var/service/qpsmtpd/config/hosts_allow. See [http://svn.perl.org/qpsmtpd/trunk/plugins/hosts_allow hosts_allow SVN code] for more details.
|???
|[http://bugs.contribs.org/show_bug.cgi?id=3352 upcoming]
|-
|-
|peers
|peers
|auth/auth_cvm_unix_local
|auth/auth_cvm_unix_local
|Allow authenticated smtp relay
|Allow authenticated smtp relay
|enabled
|enabled (remote)<br>'''disabled (local)'''
|-
|-
|check_earlytalker
|check_earlytalker
|reject email from servers that talk out of turn
|reject email from servers that talk out of turn
|enabled
|enabled (remote)<br>'''disabled (local)'''
|-
|-
|count_unrecognized_commands
|count_unrecognized_commands
|reject email from servers that issue ''X'' invalid commands
|reject email from servers that issue ''X'' invalid commands
|enabled
|enabled (remote)<br>'''disabled (local)'''
|-
|-
|bcc
|bcc
|require_resolvable_fromhost
|require_resolvable_fromhost
|Check that the domain listed in the sender's email address is resolvable
|Check that the domain listed in the sender's email address is resolvable
|enabled
|enabled (remote)<br>'''disabled (local)'''
|-
|-
|check_basicheaders
|check_basicheaders
|rhsbl
|rhsbl
|Reject email if the sender's email domain has a reputation for disregarding smtp RFCs.
|Reject email if the sender's email domain has a reputation for disregarding smtp RFCs.
|'''disabled'''
|'''disabled'''<br>(always disabled for local connections)
|-
|-
|dnsbl
|dnsbl
|-
|-
|check_smtp_forward
|check_smtp_forward
|Verify that the specified recipient is valid on the internal mail server.
|If ''config show DelegateMailServer'' or ''db domains show <domainname> MailServer'' is set (telling SME to deliver email for all domains or just <domainname> to another server), check_smtp_forward will connect to the specified server and will reject the message outright if the internal mail server would also reject it.
|enabled
|'''disabled'''<br>unless an internal mail server is configured.
|-
|-
|check_goodrcptto
|check_goodrcptto
|spamassassin
|spamassassin
|Check email using spamassassin, and optionally reject it completely if the score exceeds a configurable value.
|Check email using spamassassin, and optionally reject it completely if the score exceeds a configurable value.
|'''disabled'''
|'''disabled'''<br>(always disabled for local connections)
|-
|-
|virus/clamav
|virus/clamav
|-
|-
|}
|}
====Internal Mail Servers====
SME can be configured as a spam and antivirus filter for one or more "Internal" mail servers on a domain-by-domain basis. The mail server specified does not have to be on the same local network as your SME server.
=====Deliver ALL email to a single internal mail server=====
You can deliver all email for all domains on your SME server to a single internal mail server by setting the mail server address in server-manager::Configuration::E-mail::Change e-mail delivery settings::Address of internal mail server.
=====Deliver email for one domain to an internal mail server=====
You can also configure only a single domain to use an internal mail server, or you can configure different domains to use different internal mail servers.
First, create the necessary virtual domains using server-manager::Configuration::Domains::Add Domain.
Then, (assuming your domain is called ''test.com'' and the actual mail server is at ''a.b.c.d''issue the following commands:
db domains setprop test.com MailServer a.b.c.d
signal-event email-update
=====Setup Blacklists & Bayesian Autolearning=====
=====Setup Blacklists & Bayesian Autolearning=====
