On 23/10/2011 02:50, Phil Pennock wrote:
> On 2011-10-22 at 23:08 +0100, Colin wrote:
>> Say I have the following in /etc/staticroutes
>>
>> domain1.com: 1.1.1.1
>> domain2.com: 2.2.2.2
>> domain3.com: 1.1.1.1
>>
>> Delivery to each domain individually is fine. A message addressed to
>> user@??? and user@??? is fine.
>>
>> A message which contains any user at domain1.com and domain3.com will
>> fail as both domains point to the same IP address. Can anyone see an
>> obvious reason why these would fail?
> Yes.
>
> Look up the documentation for "$domain":
>
> When an address is being routed, or delivered on its own, this variable
> contains the domain.
> [...]
> When more than one address is being delivered at once (for example, several
> RCPT commands in one SMTP delivery), $domain is set only if they all have
> the same domain. Transports can be restricted to handling only one domain
> at a time if the value of $domain is required at transport time - this is
> the default for local transports. For further details of the environment in
> which local transports are run, see chapter 23.
>
>> #Router
>>
>> static_route:
>> driver = manualroute
>> transport = remote_smtp_smart
>> route_data = ${lookup{$domain}lsearch{/etc/staticroutes}}
> So at this point, the transport can access the host via $route_data.
>
>> #Transport
>>
>> remote_smtp_smart:
>> driver = smtp
>> port = 25
>> delay_after_cutoff = false
>> hosts = ${lookup{$domain}lsearch{/etc/staticroutes}}
>> hosts_override
> And here you look up the hosts again, but $domain will not be set if
> multiple domains are being passed down one connection.
>
> The static_route Router has provided a list of hosts via the
> "route_data" option -- you don't need to override it again here. Just
> leave off the hosts/hosts_override option to use whatever hosts were
> passed into this via the Router which specified to use this Transport.
>
> -Phil
>
Thank you for the good explanation of the setting, I shall do some
testing on it now - or at least when the test server reboots.
Regards,
Colin.
