how to run dovecot imap on separate server from postfix?

[Reindl Harald]

Am 18.02.2015 um 20:07 schrieb Robert Fantini:
> OK I got delivery from postfix to lmtp working  ,
>
>   by changing from unix_listener  to inet_listener .
>
>
> Reindl  wrote  "don't open the port for any other machine as the postfix
> server"
> I see that is important..   I assume that just a firewall setting?  Or
> does the 'address'  line in inet_listener lmtp  have something to do with
> it?

firewall as long as you don't have more than one network card and the 
interface dovecot is listening on is only reachable from the postfix server

even if: *always* restrict the packet filter, sooner or later somebody 
will change something without realize the impact and hence if it comes 
to security put at least 2 safety nets in front of server ports

> On Wed, Feb 18, 2015 at 12:37 PM, Reindl Harald <h.reindl at thelounge.net>
> wrote:
>
>>
>>
>> Am 18.02.2015 um 18:20 schrieb Reindl Harald:
>>
>>
>>> Am 18.02.2015 um 18:15 schrieb Robert Fantini:
>>>
>>>> I'm trying to figure out the exact line to put to /etc/postfix/main.cf
>>>>
>>>> for local lmtp deliver we use:
>>>> mailbox_transport = *lmtp:unix:private/dovecot-lmtp*
>>>>
>>>> for remote  it is supposed to be:* lmtp:host:port*
>>>>
>>>> yet at the remote  lmtp does not use ports.  UNIX domain sockets are used
>>>> instead
>>>>
>>>
>>> so just configure dovecot lmtpd to listen on a TCP port, port 24 is
>>> reserved for that - and don't open the port for any other machine as the
>>> postfix server
>>>
>>> [harry at srv-rhsoft:~]$ cat /etc/services | grep -i lmtp
>>> lmtp            24/tcp                          # LMTP Mail Delivery
>>> lmtp            24/udp                          # LMTP Mail Delivery
>>>
>>
>> and since i answered the same question yet on the postfix list
>>
>> http://wiki2.dovecot.org/LMTP
>> http://www.postfix.org/lmtp.8.html

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