[Dovecot] Problem with LDA. When vacation auto-reply sent, the field from=<>.

[Dmitry]

> you should try to explain your problem and not how to implement a solution

Sorry. I know English bad.
I tried to describe the problem in the first letter.
I'll try again.

My Dovecot receive mail from many different domains (around 30) from many different machines.
1.1.1.1 - domain1
2.2.2.2 - domain2
3.3.3.3 - domain3
...
with different postfix with
virtual_transport = lmtp:10.10.10.10:24
in their main.cf
10.10.10.10 - machine with my dovecot.

Users imap - 10.10.10.10:143
User smtp - 10.10.10.10:25
10.10.10.10:25 - postfix with 
sender_dependent_relayhost_maps = hash:$config_directory/relayhost_maps

in relayhost_maps
@domain1	[1.1.1.1]
@domain2	[2.2.2.2]
@domain3	[3.3.3.3]

for example user at domain2 receive mail:
inet -> 2.2.2.2:25 -> 10.10.10.10:24 -> saved to disk 
user at domain2 connect to 10.10.10.10:143 and read it.

for example user at domain2 sends mail:
user at domain2 connect to 10.10.10.10:25
because in relayhost_maps written
@domain2	[2.2.2.2]
postfix sends it in 2.2.2.2
10.10.10.10:25 -> 2.2.2.2:25 -> inet

Everything works fine until the case comes to vacation auto-reply with dovecot-pigeonhole plugin :(
Because the domain of the sender is unknown, postfix 10.10.10.10 does not understand where to forward mail. Where relay for domain2.

I do not know what to do ...






On Wed, 22 Jan 2014 15:46:52 +0100
Reindl Harald <h.reindl at thelounge.net> wrote:

> do not mix the "From: header address of MAILER-DAEMON" with the envelope
> from=<MAILER-DAEMON at domain(1,2,3)> would be the problem described below
> why in the world do you need "sender_dependent_relayhost_maps" for vacation?
> 
> you should try to explain your problem and not how to implement a solution
> http://www.catb.org/~esr/faqs/smart-questions.html
> 
> Am 22.01.2014 15:39, schrieb Dmitry:
> > Thanks for your quick reply.
> > 
> > Can I least make dovecot write from=<MAILER-DAEMON at domain(1,2,3)>?
> > How can I make "sender_dependent_relayhost_maps" works in postfix?
> > 
> > On Wed, 22 Jan 2014 14:18:26 +0100
> > Reindl Harald <h.reindl at thelounge.net> wrote:
> > 
> >> Am 22.01.2014 13:39, schrieb Dmitry:
> >>> My problem is that when vacation auto-reply sent the field from=<>
> >>> Because of this does not work "sender_dependent_relayhost_maps" in postfix
> >>
> >> <> is correct in case of auto-responders
> >>
> >> why?
> >> to prevent mail-loops if both sides have a responder
> >>
> >> well, there are special headers too for this but they
> >> rely on be respected by the final destination while
> >> null sender never get bounces and replies
> >>
> >> http://en.wikipedia.org/wiki/Bounce_message
> >>
> >> Bounce messages in SMTP are sent with the envelope sender address <>,
> >> known as the null sender address. They are frequently sent with a From:
> >> header address of MAILER-DAEMON at the recipient site.
>