* tdn@??? <tdn@???> [20040224 09:05]: wrote:
> Hi there,
>
> I have a server which is an incoming relay for a couple of domains, and
> would like to verify recipients of one of the domains against a flat
> file of valid recipients before accepting the mails. How would I go
> about this?
On a relay server, I think it would be a lot easier to do recipient
callouts in RCPT acl than having to haul a flatfile everytime you make
changes to the domain.
# This statement accepts the incoming recipient address if the domain is
# one of domains for which this host is a relay, but again, only if the address
# can be verified.
accept domains = +relay_to_domains
endpass
message = Unrouteable address.
# verify = recipient
verify = recipient/defer_ok/callout=10s/callout_defer_ok
If that is not satisfactory, then you will have to craft a router (and a
transport to boot) with a suitable condition. Something like below comes
to mind, but untested!!
condition = ${lookup{$local_part}lsearch{/usr/local/etc/exim/$domain}{yes}{no}}
cheers
- wash
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