Exim still accepting emails to nonexistent users

[Marti Markov]

Hi Heiko,

Here is the router:

    virtual_aliases:
        driver = redirect
        debug_print = "R: Check address using virtual_aliases for $local_part@$domain"
        allow_fail
        allow_defer
        hide data = CHECK_VIRTUAL_ALIASES
        user = vmail
        group = mail




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
  cannot_route_message = Unknown user


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

This might also be helpful (this is with check_local_user commented out in the router)
--------> local_user router <--------
local_part=nosuchuser domain=domainproblem.com
checking domains
cached yes match for +local_domains
cached lookup data = NULL
domainproblem.com in "+local_domains"? yes (matched "+local_domains" - cached)
checking local_parts
NoSuchUser in "! root"? yes (end of list)
R: local_user for nosuchuser at domainproblem.com
calling local_user router
local_user router called for NoSuchUser at domainproblem.com
  domain = domainproblem.com
queued for dovecot_lmtp transport: local_part = nosuchuser
domain = domainproblem.com
  errors_to=NULL
  domain_data=NULL localpart_data=NULL
routed by local_user router
  envelope to: NoSuchUser at domainproblem.com
  transport: dovecot_lmtp
Cannot do callout: neither router nor transport provided a host list
----------- end verify ------------
deny: condition test failed in ACL "acl_check_rcpt"
processing "accept"
check domains = +relay_to_domains
domainproblem.com in "empty"? no (end of list)
domainproblem.com in "+relay_to_domains"? no (end of list)
accept: condition test failed in ACL "acl_check_rcpt"
processing "accept"
accept: condition test succeeded in ACL "acl_check_rcpt"
SMTP>> 250 Accepted
250 Accepted


This is when it’s not commented out:
--------> local_user router <--------
local_part=m.markov domain=domainproblem.com
checking domains
cached yes match for +local_domains
cached lookup data = NULL
domainproblem.com in "+local_domains"? yes (matched "+local_domains" - cached)
checking local_parts
m.markov in "! root"? yes (end of list)
checking for local user
seeking password data for user "m.markov": using cached result
getpwnam() returned NULL (user not found)
local_user router skipped: m.markov is not a local user


I currently have check_local_user disabled because nobody will be able to receive emails.

> On 17 Nov 2016, at 21:33, Heiko Schlittermann <hs at schlittermann.de> wrote:
> 
> Hi,
> 
> Marti Markov <marti1234 at gmail.com> (Mi 16 Nov 2016 04:28:28 CET):
>> After adding the configuration bit:
>> 
>> deny
>>        message = invalid recipient
>>        domains = +local_domains
>>        !verify = recipient/callout=no_cache
>> 
>> from: http://wiki2.dovecot.org/LMTP/Exim <http://wiki2.dovecot.org/LMTP/Exim> running update-exim4.conf and service exim4 restart
>> 
>> the server is still accepting emails to recipients that do not exist in dovecot.
> 
> How is the router, targeting the messages to dovecot, configured? And
> how the transport, responsible for the delivery to dovecot?
> 
>    Best regards from Dresden/Germany
>    Viele Grüße aus Dresden
>    Heiko Schlittermann
> -- 
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