Hi Marti, (Please do not send CC to my private account)
Marti Markov <marti1...@gmail.com> (Mo 21 Nov 2016 03:52:54 CET):
>
> Here is the router:
>
> virtual_aliases:
…
> hide data = CHECK_VIRTUAL_ALIASES
> local_user:
> debug_print = "R: local_user for $local_part@$domain"
> driver = accept
> domains = +local_domains
> #Dovecot auth check
> # check_local_user
> local_parts = ! root
> transport = dovecot_lmtp
>
> And this is the transport:
>
> dovecot_lmtp:
> driver = lmtp
> socket = /var/run/dovecot/lmtp
> #return_path_add
> #maximum number of deliveries per batch, default 1
> batch_max = 200
Ok, the router cannot check the existence of the user. check_local_user
won't help you, as long as the $local_part is not a system user locally.
Basically you got 2 possibilities:
a) check in the routing stage by accessing the user database
-> testable with: exim -bv u...@exampl.com
b) check in the transport stage by using a callout
-> testable with: swaks … --pipe 'exim -bhc i.i.i.i'
a) Routing stage
You need to interact with the user database dovecot uses.
Either you access the user database directory (flat file, LDAP,
whatever) or you use the ${readsocket…} feature of Exim to talk to
dovecot.
b) Transport stage
You need to configure the dovecot LMTP to refuse messages to unknown
uses. This you can test using swaks (it's capable of talking LMTP).
Once this LMTP works (refusing unknown users) you can use callouts for
verification during SMTP time. (exim -bv … will still tell you, that the
message is *routable*, but exim -bh and the pipe mode of swaks may help
you.
Ha ….
> transport: dovecot_lmtp
> Cannot do callout: neither router nor transport provided a host list
This can be 'fixed' if you use (not tested)
dovecot_lmtp:
driver = smtp
protocol = lmtp
host = localhost
port = 2525
and have the dovecot LMTP run on a local TCP port
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
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