[Dovecot] Small issue with "submission host"

[Raphael Ordinas]

Hi everyone,

I'm facing a small issue with the lda/lmtp "submission_host" feature in 
dovecot 2.0.14.

When sending mail to MTA (in case of sieve filter forwarding for 
example), dovecot pass a RCPT TO command just after the EHLO. He's 
missing the MAIL FROM command.
Therefore, my MTA show me a warning like this : "improper command 
pipelining after EHLO".

How can i solve that ?

Regards,

Raphael