postfix connects to dovecot lmtp socket, but nothing is delivered

[Gerben Wierda]

> On 5 Jan 2023, at 18:17, dovecot at ptld.com wrote:
> 
>> service lmtp {
>> inet_listener lmtp {
>> address = 127.0.0.1
>> port = 24
>> }
> 
>> unix_listener /var/spool/postfix/private/lmtp {
>> mode = 0660
>> user = postfix
>> group = postfix
>> }
> 
> 
> Looks like you are activating both a socket and a port. Im not sure what dovecot does, does it bind to both or does it pick one and ignore the other. You only need to use one or the other.
> 
> And what does your postfix side look like? Where is postfix trying to connect? To the socket or the port? For using a socket postfix would look something like:
> 
>    virtual_transport = lmtp:unix:private/lmtp
> 

I removed the tcp port for now.

/ # doveconf service/lmtp
service lmtp {
  chroot = 
  client_limit = 1
  drop_priv_before_exec = no
  executable = lmtp
  extra_groups = $default_internal_group
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = lmtp
  service_count = 0
  type = 
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = mail
    mode = 0660
    user = postfix
  }
  unix_listener lmtp {
    group = 
    mode = 0666
    user = 
  }
  user = 
  vsz_limit = 18446744073709551615 B
}

postfix config:

mailbox_transport = lmtp:unix:private/dovecot-lmtp
virtual_transport = lmtp:unix:private/dovecot-lmtp

I had confused postfix's own lmtp socket with dovecot's, which was originally named dovecot-lmtp but when it wasn't created I though my config was wrong.

What seems to happen is that /var/spool/postfix/private/dovecot-lmtp isn't created by dovecot at launch, but /var/spool/postfix/private/auth is

G
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