[SOLVED] Ubuntu 11.04 x64 + ISPConfig 3 = SASL problems Hi ! I'm running Ubuntu 11.04 x64 with ISPConfig 188.8.131.52 and i have some problems sending mails from an external client like Thunderbird. In my mail.log i got these errors : Code: SASL PLAIN authentication failed: authentication failure SASL LOGIN authentication failed: authentication failure After hours reading in the forums, i found this thread: http://www.howtoforge.com/forums/showthread.php?t=47819&highlight=SASL+PLAIN+authentication+failed Then, checking my config I found that this file is missing : /etc/pam.d/smtp but, this is based in the "Ubuntu 8.04 perfect setup" gide. So my question is: Is this file needed for my Ubuntu 11.04 setup ? If yes: may you help me filling the filling the necessary parameters in this file: Code: auth required pam_mysql.so user=mail_admin passwd=mail_admin_password host=127.0.0.1 db=mail table=users usercolumn=email passwdcolumn=password crypt=1 account sufficient pam_mysql.so user=mail_admin passwd=mail_admin_password host=127.0.0.1 db=mail table=users usercolumn=email passwdcolumn=password crypt=1 If so, I think Falko have to add this to the "Ubuntu perfect setup gides" from Ubuntu 10.* to Ubuntu 11.* because I have searched and does not appear. I hope thi will solve my problem... if not, what may you recommend to me ? im thinking in replace Courrier for Dovecot and make the SASL authentication directly with Dovecot. Thanks in advance for your anwers ! Daniel.