Hi there all of you. I would like to consider myself a newbie in Debian OS. During the past few days i installed ISPConfig and Webmin along with all the appropriate packages. I faced several problems with the relay error, authentication error and stuff like that. Searching the internet i fould solution to most of them. I am one step to finalize my installation but i am facing a problem i could not find anywhere the solution to. I would really appreciate your help on this. Along with Postfix and Dovecot pop3 / imapd i can receive mail in my created accounts but when it is to sending, the email client shows me that is sending the mail and several minutes later says that the connection has been timed out (contact your system admin ISP etc). All the internal - external ports have been enabled and my isp does not block ports 110 and 25. Thank you all in advance ...  Now what i ve done. I checked out the solutions in http://www.howtoforge.com/forums/archive/index.php/t-417.html and now i have a responce from my server (and i still can't send emails). I have checked "this server needs authorization" in my account properties and now i am getting a username and password prompt again and again. The username and password are correct and tested with testsaslauthd -u [username] -p [password] but the prompt won't go away I am searching to find the answer in this particular error within the mail.log ( sasl authentication problem: unable to open Berkeley db /etc/sasldb2: permission denied ). That is why the usarname and password window keeps coming up.