Hi Marti,
(Please do not send CC to my private account)
Marti Markov marti1234@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 user@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-- SCHLITTERMANN.de ---------------------------- internet & unix support - Heiko Schlittermann, Dipl.-Ing. (TU) - {fon,fax}: +49.351.802998{1,3} - gnupg encrypted messages are welcome --------------- key ID: F69376CE - ! key id 7CBF764A and 972EAC9F are revoked since 2015-01 ------------ -