Dovecot LMTP tries to access a directory of a different user, than the one it actually changed to.

[Arkadiusz Miśkiewicz]

On Friday 03 of July 2015, Ernest Deak wrote:
> Hello, I encountered a problem when trying to send an email to multiple
> recipients.

That bug exists for some time

http://www.dovecot.org/list/dovecot/2014-September/097688.html

but no solution exists and I think no one actually tried to fix it.

(no solution beside already mentioned ugly workaround with limiting to 1 
recipient per lmtp session)

-- 
Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )