[Dovecot] sieve vacation messages trouble

[asier.cidon at externo.uam.es]

FROM:mailman-bounces at dovecot.org
DATE:27. heinäkuuta 2012 16.58.35 UTC+3.00
TO:dovecot-owner at dovecot.org
SUBJECT:CONTENT FILTERED MESSAGE NOTIFICATION

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FROM:Asier Cidon Periañez <asier.cidon at externo.uam.es>
DATE:27. heinäkuuta 2012 16.01.59 UTC+3.00
TO:dovecot at dovecot.org
SUBJECT:RE: [DOVECOT] SIEVE VACATION MESSAGES TROUBLE

Hi,

I have a problem when I define a  Filter SIEVE vacation with Horde, Qmail
and Dovecot.

When I sent the message vacation for domains external, the log of postfix
show <"<>"@mymachine>.

I am writing you because I saw the post
http://www.dovecot.org/list/dovecot/2009-June/040811.html

Can you explain me whqt is the solution?

Many Thanks.