[sork] vacation : how to do for not reply several times

[Gerard Breiner]

Hello,

How to configure the module vacation for do not send again to an adress 
which has already been advised about a vacation even though a mail comes 
again from this adress ?
I use horde's vacation with ldap, postfix and imap.

Thanks in advance

Gerard

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Université Paris-Sud 11
Institut D'Astrophysique Spatiale
Gérard Breiner
Rue Georges Clémenceau
fr-91405 Orsay-ville