dovecot - Jan 2023 - postfix connects to dovecot lmtp socket, but nothing is delivered

> 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

> On 05/01/2023 19:17 EET 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
This is a rare case where one should look at

`doveconf service/lmtp`

to see what the default listeners are.

Aki

> 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
Ha, my mistake. As dovecot had not created the socket I assumed th elmtp socket
was the one the new config had created, so I changed the config to use that one.

Now I only have to find out why dovecot doesn't create the
/var/spool/postfix/private/dovecot-lmtp socket

The inet_listener was added to see if I could work around this.

G

> 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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