Dear clapf-users, as you know postfix is the preferred MTA to work with clapf via the LMTP/SMTP protocol. Exim is another widely deployed MTA and finally I found a way to introduce the clapf daemon to such an environment. I found the solution in the amavisd documentation (http://www.ijs.si/software/amavisd/README.exim_v4.txt). Basically it requires 3 steps: 1) let exim listen on 127.0.0.1:10026/tcp, 2) add a new router, and 3) a new transport that would pass incoming emails to clapf. Then send a HUP signal to exim. The whole procedure is documented at http://clapf.acts.hu/exim.php. Be sure to check out the docs on the amavis site for a more advanced configuration, and even the links below, too: http://www.ijs.si/software/amavisd/README.exim_v4_app.txt http://www.ijs.si/software/amavisd/README.exim_v4_app2.txt A final note: you must configure exim to use smtp delivery to clapf. Best regards, Janos