Topic: Sender address rejected: not logged in

Hi My problem,

two mail server, 

first  microsoft exchange server 2010
two iredmail pro

abcz.com  domain   authorite on the iredmail 
all user  ( 960 ) 

some user  use the   zbcm.com  on the microsoft exchange server 2010,
but reply adress  xxx@abcz.com

user is send the  new mail   akar@abcz.com   not in the exchange server,   ired mail server  send the error message

sender adress rejected: not logged in,

how the  fix error,    how the  exception  some users,



v1.3.1 (MySQL)

Ubuntu 12.04. LTS 64 Bit

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- iRedMail version:
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