Contents


 1. Using LMTP over TCP Socket

 2. Using LMTP over UNIX Socket

 3. Verifying recipients using LMTP

Exim provides support for LMTP over UNIX sockets using the LMTP transport
[http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_lmtp_transport.html],
your distribution may/not provide this, run exim -bV and check for 'lmtp' in
'Transports:'. Support for LMTP over TCP sockets is provided by the SMTP
transport
[http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_smtp_transport.html].

Using LMTP over TCP Socket
--------------------------

Example router:

---%<-------------------------------------------------------------------------
myusers:
        transport = mylmtp
        domains = +local_domains
        driver = manualroute
        route_list = "* 192.168.1.0 byname"
        #if destination server is the local host enable this
        #self = send
---%<-------------------------------------------------------------------------

Example transport:

---%<-------------------------------------------------------------------------
mylmtp:
        driver = smtp
        protocol = lmtp
        port = 2525
---%<-------------------------------------------------------------------------

Set IP and port as appropriate to your setup.

Using LMTP over UNIX Socket
---------------------------

Example transport:

---%<-------------------------------------------------------------------------
mylmtp:
        driver = lmtp
        socket = /var/run/dovecot/lmtp
        #maximum number of deliveries per batch, default 1
        batch_max = 200
---%<-------------------------------------------------------------------------

Example router:

---%<-------------------------------------------------------------------------
myusers:
        transport = mylmtp
        domains = +local_domains
        driver = manualroute
        route_data = whatmeworry # required but not useful
---%<-------------------------------------------------------------------------

Verifying recipients using LMTP
-------------------------------

You can use callout verification to avoid accepting mail for addresses which do
not exist in Dovecot. Below is a config snippet which could be used in
acl_check_rcpt to achieve this:

---%<-------------------------------------------------------------------------
deny
        message = invalid recipient
        domains = +local_domains
        !verify = recipient/callout=no_cache
---%<-------------------------------------------------------------------------

For more information on address verification see the related section of the
Exim specification
[http://www.exim.org/exim-html-current/doc/html/spec_html/ch-access_control_lists.html#SECTaddressverification].

(This file was created from the wiki on 2013-06-24 04:42)
