I(ve got a server installed with Debian and Postfix 2.8.3 for delivery from outside. All works fine but I've got serious difficulties with attachment. I don't know why but Postfix refuse emails with excel attachments for example ! The server replies to other server :
Remote host said: 554 5.7.1 The file Copie de Classeur1.xls has been blocked. File quarantined as
I've dont installed spamassassin or things like this. I only installed my postfix pour delivery smtp with cyrus for imap.
Does anyone has an idea ?