On Mon, Nov 16, 2009 at 02:56:08PM -0500, Wietse Venema wrote:

> Dhiraj Chatpar:
> > HI,
> > 
> > I am getting this error when i am trying to connect my postfix
> > via transport_maps = tcp:localhost:2525
> > 
> > Nov 16 13:48:34 mail postfix/trivial-rewrite[4403]: fatal: unsupported
> > dictionary type: tcp
> 
> Use "postconf -m" to see what types of map are supported.

Given the port number (2525), it is most likely that the TCP service
in question is an SMTP server. As others have pointed out, the
"transport_maps" parameter is a list of "type:name" *tables* that
map recipient domains to a transport:nexthop.

If the OP wants to set a global default nexthop, that's done with
default_transport:

        default_transport = smtp:[localhost]:2525

similar settings are available for other address classes:

        relay_transport = ...
        virtual_transport = ...
        local_transport = ...

Additionally, the "relayhost" parameter provides a default nexthop,
without overriding the transport.

    http://www.postfix.org/BASIC_CONFIGURATION_README.html#relayhost
    http://www.postfix.org/ADDRESS_REWRITING_README.html#delivering
    http://www.postfix.org/ADDRESS_REWRITING_README.html#resolve
    http://www.postfix.org/ADDRESS_CLASS_README.html#classes

    http://www.postfix.org/postconf.5.html#default_transport
    http://www.postfix.org/postconf.5.html#relay_transport
    http://www.postfix.org/postconf.5.html#virtual_transport
    http://www.postfix.org/postconf.5.html#local_transport
    http://www.postfix.org/postconf.5.html#relayhost

    http://www.postfix.org/postconf.5.html#transport_maps

    http://www.postfix.org/transport.5.html

-- 
        Viktor.

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