On Tue, Apr 08, 2014 at 07:30:17AM +0000, Grooz, Marc (regio iT) wrote: > I setup a smtpd_proxy_filter to amavis and want use TLS. Amavis > and Postfix provide STARTTLS for smtp & smtpd. The connection from > Postfixs smtpd_proxy_filter to amavis won't use STARTTLS. Is there > a way to tell Postfix to use STARTTLS in smtpd_proxy_filter setup?
No, TLS encryption is not available between the SMTP server and the pre-queue proxy filter. To use TLS for content inspection the only option is the post-queue content_filter. If filtering needs to happen before the client disconnects, I'm afraid TLS is not possible. TLS client functionality is not available in the Postfix SMTP server. -- Viktor.