Main Operation Principles

Dr.Web MailD can be connected to Postfix in one of the following ways:

In the after-queue mode (http://www.postfix.org/FILTER_README.html#advanced_filter);

In the before-queue mode (http://www.postfix.org/SMTPD_PROXY_README.html);

Using Milter protocol (http://www.postfix.org/MILTER_README.html).

warning

Only Postfix version 2.3.3 and later can be used with Milter protocol.