On 12/23/2015 7:29 AM, Olivier CALVANO wrote: > Hi > > it's possible to deny a attachment extension directly into postfix ?
You can block attachment extensions using either header_checks or mime_header_checks. There's a nice working example at the end of the header_checks man page (the example also works with mime_header_checks). http://www.postfix.org/header_checks.5.html header_checks and mime_header_checks rules will apply to all mail without exception. There is no bypass or whitelist function for specific domains/recipients/senders/etc. > > and create a database : > > domaine1.com <http://domaine1.com> .exe;.bat;.cab > domaine2.com <http://domaine2.com> .exe To perform blocking with exceptions, you'll need a milter, smtpd_proxy_filter, or content_filter outside of postfix, such as mimedefang or amavisd-new. -- Noel Jones
