Re: Disable Dovecot LDA
If both postfix’ in your example are the same server, then that’s not possible indeed. Consider it has one brain, so it has to decide: Do I know this domain or do I need to send it upstream (either to the MX of the target domain, or to a configured relay). In case it’s a domain postfix hosts, a delivery attempt will be made directly via LMTP/LDA. It does not go out (since it’s known local). In case the domain is not hosted locally, it will be forwarded to a relay, and that has to decide where to send it next. If your machine is the best known option for the target domain, then it will be send there. But if that is the same postfix server, that’s an issue: because the domain is not known locally ,and thus it should be rejected. Message = lost. In case you have 2 postfix instances, where A is on the top side of your image, then it can be configured to route all email to relay, and that has a configuration that send’s it to instance B (the bottom); that can have configuration that treats the target domain as local, and thus starts an delivery attempt to LMTP/LDA. Does that help a bit? Cheers Remko > On 2 Apr 2020, at 21:29, Adam Raszkiewicz wrote: > > So there is no way to skip Postfix for incoming messages and go directly to > LMTP/LDA but I need two instances of Postfix in that case? > > Regarding your second question - it is required to be complaint with Direct > Trust. > > Thanks, > Adam > > On 4/2/20, 3:07 PM, "dovecot on behalf of Juri Haberland" > wrote: > >On 02/04/2020 15:18, Adam Raszkiewicz wrote: >> Desired flow looks like: >> >> Dovecot -> Postfix --> Relay Server -┐ >> Dovecot <-- LMTP/LDA <-- Postfix <-┘ > >This mail flow cannot work with one Postfix instance. Either Postfix >knows that "localdomain.com" is local and should be delivered to the >LDA, in which case it won't be forwarded to the relay server, or Postfix >does not know that "localdomain.com" is a local address and therefor >forwards it the relay server, but than it will do that anytime it sees >"localdomain.com". > >Only possibility is to run two instances of Postfix. > >The real question is: >Why do you want this mail flow? Where is the benefit in sending a local >mail out to a relay server only to get it back and deliver it? > > >Cheers, > Juri > >
Re: Disable Dovecot LDA
So there is no way to skip Postfix for incoming messages and go directly to LMTP/LDA but I need two instances of Postfix in that case? Regarding your second question - it is required to be complaint with Direct Trust. Thanks, Adam On 4/2/20, 3:07 PM, "dovecot on behalf of Juri Haberland" wrote: On 02/04/2020 15:18, Adam Raszkiewicz wrote: > Desired flow looks like: > > Dovecot -> Postfix --> Relay Server -┐ > Dovecot <-- LMTP/LDA <-- Postfix <-┘ This mail flow cannot work with one Postfix instance. Either Postfix knows that "localdomain.com" is local and should be delivered to the LDA, in which case it won't be forwarded to the relay server, or Postfix does not know that "localdomain.com" is a local address and therefor forwards it the relay server, but than it will do that anytime it sees "localdomain.com". Only possibility is to run two instances of Postfix. The real question is: Why do you want this mail flow? Where is the benefit in sending a local mail out to a relay server only to get it back and deliver it? Cheers, Juri
Re: Disable Dovecot LDA
On 02/04/2020 15:18, Adam Raszkiewicz wrote: > Desired flow looks like: > > Dovecot -> Postfix --> Relay Server -┐ > Dovecot <-- LMTP/LDA <-- Postfix <-┘ This mail flow cannot work with one Postfix instance. Either Postfix knows that "localdomain.com" is local and should be delivered to the LDA, in which case it won't be forwarded to the relay server, or Postfix does not know that "localdomain.com" is a local address and therefor forwards it the relay server, but than it will do that anytime it sees "localdomain.com". Only possibility is to run two instances of Postfix. The real question is: Why do you want this mail flow? Where is the benefit in sending a local mail out to a relay server only to get it back and deliver it? Cheers, Juri
Re: Disable Dovecot LDA
On Thu, 2 Apr 2020 13:18:14 +, Adam Raszkiewicz stated: >Desired flow looks like: > >Dovecot -> Postfix --> Relay Server -┐ >Dovecot <-- LMTP/LDA <-- Postfix <-┘ > >Top part of that flow works fine - a message will get to the relay >server and it will be send back to the postfix for a local delivery >but then it will start to loop back to the relay server instead hand >over to LMTP/LDA. > >For some reason Postfix doesn't know that a...@localdomain.com is >located on Dovecot and it will try to send it back to the relay >server. I have the same problem explained here: >https://serverfault.com/questions/1010325/postfix-via-relay-server-and-lmtp-configuration-for-incoming-delivery-to-local-m > >Thanks for any help! >~Adam > >On 4/1/20, 6:45 PM, "dovecot on behalf of Dauser Martin Johannes" > wrote: > >On Dienstag, 31. März 2020 21:14:26 CEST Adam Raszkiewicz wrote: >> But then it loops again when get back to the postfix as an >> incoming message (doesn't know that a...@localdomain.com is >> located on that Dovecot) >+ >> Is there any way to disable Dovecot LDA? I want to always send >> email via postfix and relay server even it will be a local >> delivery within the Dovecot server >> >>Thanks, >>Adam > >Why should a disabled LDA or a relayhost help in this matter? > Honestly, who is sending what to where anyway? > >I mean Dovecot is an IMAP-Server: It receives emails from Postfix > and mailclients connect to Dovecot to get these mails. When a > mailclient sends an email it connects to Postfix not to Dovecot, so a > delivery "within Dovecot" isn't really happening. Dovecot's LDA has > options to send (bounce) mails back to Postfix. I guess loops occur > there? >WHO doesn't know that a...@localdomain.com is located on Dovecot > -- Dovecot itself (= unknown recipient or perhaps permission problems > while saving the mail) or Postfix (= no transport to Dovecot)? > >Martin This question really belongs on the 'postfix' forum. Have you read <http://www.postfix.org/DEBUG_README.html> or better still, <http://www.postfix.org/DEBUG_README.html#mail>. The "postfinger" tool is the best way. -- Jerry pgpddSbXQSgBz.pgp Description: OpenPGP digital signature
Re: Disable Dovecot LDA
Desired flow looks like:
Dovecot -> Postfix --> Relay Server -┐
Dovecot <-- LMTP/LDA <-- Postfix <-┘
Top part of that flow works fine - a message will get to the relay server and
it will be send back to the postfix for a local delivery but then
it will start to loop back to the relay server instead hand over to LMTP/LDA.
For some reason Postfix doesn't know that a...@localdomain.com is located on
Dovecot and it will try to send it back to the relay server.
I have the same problem explained here:
https://serverfault.com/questions/1010325/postfix-via-relay-server-and-lmtp-configuration-for-incoming-delivery-to-local-m
Thanks for any help!
~Adam
On 4/1/20, 6:45 PM, "dovecot on behalf of Dauser Martin Johannes"
wrote:
On Dienstag, 31. März 2020 21:14:26 CEST Adam Raszkiewicz wrote:
> But then it loops again when get back to the postfix as an incoming
message
> (doesn't know that a...@localdomain.com is located on that Dovecot)
+
> Is there any way to disable Dovecot LDA? I want to always send email via
> postfix and relay server even it will be a local delivery within the
Dovecot
> server
>
>Thanks,
>Adam
Why should a disabled LDA or a relayhost help in this matter? Honestly, who
is
sending what to where anyway?
I mean Dovecot is an IMAP-Server: It receives emails from Postfix and
mailclients connect to Dovecot to get these mails. When a mailclient sends
an
email it connects to Postfix not to Dovecot, so a delivery "within Dovecot"
isn't really happening. Dovecot's LDA has options to send (bounce) mails
back
to Postfix. I guess loops occur there?
WHO doesn't know that a...@localdomain.com is located on Dovecot -- Dovecot
itself (= unknown recipient or perhaps permission problems while saving the
mail) or Postfix (= no transport to Dovecot)?
Martin
Re: Disable Dovecot LDA
On Dienstag, 31. März 2020 21:14:26 CEST Adam Raszkiewicz wrote: > But then it loops again when get back to the postfix as an incoming message > (doesn't know that a...@localdomain.com is located on that Dovecot) + > Is there any way to disable Dovecot LDA? I want to always send email via > postfix and relay server even it will be a local delivery within the Dovecot > server > >Thanks, >Adam Why should a disabled LDA or a relayhost help in this matter? Honestly, who is sending what to where anyway? I mean Dovecot is an IMAP-Server: It receives emails from Postfix and mailclients connect to Dovecot to get these mails. When a mailclient sends an email it connects to Postfix not to Dovecot, so a delivery "within Dovecot" isn't really happening. Dovecot's LDA has options to send (bounce) mails back to Postfix. I guess loops occur there? WHO doesn't know that a...@localdomain.com is located on Dovecot -- Dovecot itself (= unknown recipient or perhaps permission problems while saving the mail) or Postfix (= no transport to Dovecot)? Martin
Re: Disable Dovecot LDA
But then it loops again when get back to the postfix as an incoming message
(doesn't know that a...@localdomain.com is located on that Dovecot)
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On 3/31/20, 1:45 PM, "dovecot on behalf of Aki Tuomi"
wrote:
> On 31/03/2020 19:35 Adam Raszkiewicz wrote:
>
>
>
> Hi,
>
>
> Is there any way to disable Dovecot LDA? I want to always send email via
postfix and relay server even it will be a local delivery within the Dovecot
server
>
Dovecot LDA is fully optional. Just don't use it in postfix configuration
Aki
>
> Thanks,
>
> Adam
Re: Disable Dovecot LDA
> On 31/03/2020 19:35 Adam Raszkiewicz wrote: > > > > Hi, > > > Is there any way to disable Dovecot LDA? I want to always send email via > postfix and relay server even it will be a local delivery within the Dovecot > server > Dovecot LDA is fully optional. Just don't use it in postfix configuration Aki > > Thanks, > > Adam
Disable Dovecot LDA
Hi, Is there any way to disable Dovecot LDA? I want to always send email via postfix and relay server even it will be a local delivery within the Dovecot server Thanks, Adam
