On Sat, 8 Oct 2005, Wakko Warner wrote:
> I have looked through the expansion variables and I can't figure out how
> retrieve the IP that my host is using to connect to another host. I'm doing
> this so it can set the helo data in the smtp transport.
>
> I tried this:
> smtp:
> driver = smtp
> helo_data = ${lookup dnsdb{ptr=$interface_address}}
>
> Unfortunately that variable is unset.
$interface_address
When a message is received over a TCP/IP connection, this variable contains
the address of the local IP interface. See also the -oMi command line
option. This variable can be used in ACLs and also, for example, to make
the file name for a TLS certificate depend on which interface is being
used.
$host_address
This variable is set to the remote host's IP address whenever $host is set
for a remote connection. It is also set to the IP address that is being
checked when the ignore_target_hosts option is being processed.
$host
When the smtp transport is expanding its options for encryption using TLS,
$host contains the name of the host to which it is connected. Likewise,
when used in the client part of an authenticator configuration (see chapter
33), $host contains the name of the server to which the client is
connected.
When used in a transport filter (see chapter 24) $host refers to the host
involved in the current connection. When a local transport is run as a
result of a router that sets up a host list, $host contains the name of the
first host.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book: http://www.uit.co.uk/exim-book
