Grant Peel wrote:
> Hi all,
>
> I am toiling trying to set the outbound IP address (fo bandwidth accounting
> reasons), and have this so far:
>
> remote_smtp:
> driver = smtp
> helo_data = ${lookup
> dnsdb{defer_never,ptr=$sender_address_domain}{$value{$primary_hostname}}
> interface = ${lookup
> dnsdb{defer_never,a=$sender_address_domain}{$value}{my.ip.host.here}}
> return_path_add = true
> debug_print = "XX T: remote_smtp for $local_part@$domain Sent VIA
> ${lookup \
> dnsdb{defer_never,a=$sender_address_domain} \
> {$value}{my.host.ip.here}} XX"
>
> It seems to work ok if a virtual user logs in and sends an email to an
> outside server, it goes through OK and seemd to be reporting the right
> (outgoing) ip.
>
> However, if a mail comes into the server, addressed to an address that is an
> alias to another server (and domain), it fails miserably saying that 'can't
> assign requested address'. I am thinking that it is seeing the original
> sender's domain and trying to assing it as the outgoing address.
>
> Does anyone have any ideas here? ( or will I need to make another pair of
> remote_smtp Routers/Transports).
It looks to me like the $sender_address_domain might be something you
are not dealing with when a message comes from outside into the server.
ie If hotmail.com is not in your dnsdb, then the result of the lookup
will be empty and cause an error.
I would suspect separating out your router/transports would fix this
problem quite easily. A simple dnsdb lookup condition to see if should
be routing via that transport and a second to handle the case where it's
not one of your hosted domains.
If you want to keep a single router/transport and have the string
expansions figure it all out for you then you're going to have to wrap
those lookups in an ${if and test to see if the result is empty or not.
On an empty lookup, provide a default value which will work for that
situation.
Completely untested and unchecked:
${if eq{lookup{this}}{}{default-value}{$value}}
Since you probably wouldn't be actually doing anything with the sender
address, the pair of routers might be the way to go, even if one of them
has the no_verify option turned on.
Ted.
