single instance message store problem.

[Michael Neumann]

Am 29.05.2015 um 22:19 schrieb Ken Murchison:
> 
> Also, are you sure that your MTA isn't breaking up the recipients into
> separate LMTP transactions?  lmtpd can/will only do single instance
> store for recipients that are part of the same transaction (MAIL FROM,
> RCPT TO, DATA sequence).  If the recipients are sent one at a time with
> duplicate DATA commands, there are treated as distinct messages.

That is the problem, postfix default local transport does only one at a
time, that breaks single instance storage. We had to redefine it to:
local_transport = lmtp:unix:/lmtp/lmtp
Please read about the consequences in postconf manual.

Hope that helps
-- 
Michael