On Fri, 25 Feb 2005, Edward St Pierre wrote:
>
> I was wondering if it is posible to do a target host lookup in redirect
> routers. Similar to the domain lookups etc.
I'm not sure exactly what you are trying to do, so the following might not
be useful.
You could try using the ignore_target_hosts feature with a dnslookup
router to cause the router to decline if all of the MX hosts are on the
list. Then a subsequent router can deal with the address in a different
way.
Recent versions of Exim are better at handling multiple lookups in a dnsdb
query. For example, the following creates a | separated list consisting of
all the IP addresses of the MXs of the domain. However there isn't yet a
match_host expansion condition so doing anything with this list in a
router is not very easy. You can be perverse and use match_domain so long
as you are happy putting only single IP addresses in the list and using
regexes for anything more complicated.
<|${lookup dnsdb {>|a=<|\
${lookup dnsdb {>|mxh=\
$domain} }} }
Tony.
--
<fanf@???> <dot@???>
http://dotat.at/ ${sg{\N${sg{\
N\}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}\
\N}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}
