Hi, Could someone please provide some info on how to turn on SMTP Auth for ISPConfig? I have: - Built Debian Lenny server in accordance with http://howtoforge.com/perfect-server-debian-lenny-ispconfig3 - Searched the forum - Read the manual (where I would have thought something might be mentioned - there is discussion about monitoring SASL with fail2ban, but nothing on how to enable it!) I note that there is perhaps a hint when installing ISPConfig: To enable saslauthd, edit /etc/default/saslauthd and set START=yes (warning). I've done the above... is there anything else? If I do a telnet: myserver:~# telnet localhost 25 Trying 127.0.0.1... Connected to localhost.localdomain. Escape character is '^]'. 220 myserver.net ESMTP Postfix (Debian/GNU) ehlo localhost 250-hosting01.reidware.net 250-PIPELINING 250-SIZE 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN Maybe it is a simple case of I'm not connecting using the right config - I'm using Thunderbird to test. Thanks! James.