% masqmail-arch-new
{
%\scriptsize

% +----------+                                                                                 +------+
% | sendmail |-+                                                                            +->| pipe |
% +----------+ |                                                                            |  +------+
%              |                                                                            |
% +-------+    |  +----------+    ==========    +----------+    ==========    +-----------+ |  +------+
% | smtpd |----+->| queue-in |---> incoming --->| scanning |---> outgoing --->| queue-out |-+->| smtp |
% +-------+    |  +----------+    ==========    +----------+    ==========    +-----------+ |  +------+
%              .                                                                            .
%              .                                                                            .

\begin{verbatim}

 +----------+
 | sendmail |-+
 +----------+ |
              |
 +-------+    |  +----------+
 | smtpd |----+->| queue-in |--+
 +-------+    |  +----------+  |
              .                |
              .                V
                          ==========
                           incoming
                          ==========
                               |
                               V
                          +----------+
                          | scanning |
                          +----------+
                                |
                                V
                            ==========
                             outgoing               +------+
                            ==========           +->| pipe |
                                |                |  +------+
                                |                |
                                |  +-----------+ |  +------+
                                +->| queue-out |-+->| smtp |
                                   +-----------+ |  +------+
                                                 .
                                                 .

\end{verbatim}
}