Genady Perchenko <genady@???> wrote:
> I have 2 domains that are literally bombarded with email (at 1000s
> per day)
> to the random local parts from 100s of different ips. While all emails
> with non existent local parts are rejected, it does take a tall on
> the production mail server. I decided to redirect all traffic to
> those domains through the special designated mail hub that would
> filter all the mails
> with bed local parts and let the only valid once through. One of the
> ideas is not to use callout but have a local lists of local parts in
> plain text files (one per domain). I did get the hub itself to work
> but I am having trouble to
> setup the router to verify the local part. I have the following:
>
> hubbed_hosts:
> debug_print = "R: hubbed_hosts for $domain"
> driver = manualroute
> domains = "${if exists{CONFDIR/hubbed_hosts}\
> {partial-lsearch;CONFDIR/hubbed_hosts}\
> fail}"
> route_data = ${lookup{$domain}partial-lsearch{CONFDIR/hubbed_hosts}}
> fail_verify_recipient =
> ${lookup{$local_part}lsearch;{CONFDIR/$domain}} transport =
> remote_smtp
>
> But exim complains that fail_verify_recipient is not set correctly.
> What do I need to do to get my idea working?
A couple of things
- You have the syntax wrong in the fail_verify_recipient line - the ; is not
needed after the lsearch. That should fix your error I think.
- But.. what is the logic going on here? What you've done is effectively
specifiy a list of *invalid* localparts in the CONFDIR/$domain file. Is this
what you meant to do? I suspect not given your explanation above.
A more likely version where you specify a list of valid localparts would be
hubbed_hosts:
debug_print = "R: hubbed_hosts for $domain"
driver = manualroute
domains = "${if exists{CONFDIR/hubbed_hosts}\
{partial-lsearch;CONFDIR/hubbed_hosts}\
fail}"
local_parts = $lookup{$local_part}lsearch{CONFDIR/$domain}}
route_data = ${lookup{$domain}partial-lsearch{CONFDIR/hubbed_hosts}}
transport = remote_smtp
If the localpart being routed or verified isn't in the $domain file, the
router will pass - which, as long as you don't have any more routers which
would handle this domain, should produce the effect your want.
Peter
