dovecot - Jul 2011 - Director lmtp timeout errors

Hello,

     I have configured two dovecot servers with director acting as 
lmtp/imap/pop proxy server with 8 dovecot backend servers.

     In our test environment we had no problem, but when we migrated to 
production environment, our mail list server (it delivers mail through 
lmtp) is having a lot of errors like this:

451 4.4.0 Remote server not answering (DATA output timeout) (in reply to 
end of DATA command))

     I have found this same issue in some posts to this list, but I 
can't find any solution

     Any idea?

-- 
Angel L. Mateo Mart?nez
Secci?n de Telem?tica
?rea de Tecnolog?as de la Informaci?n       _o)
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