I am getting this message when attempting to send messages from my webserver. I am fairly new to the Linux world. From what I am seeing. As a client I can loggin into the ISPconfig webmail and send messages with no problem. When I try to use a cold fusion page from a remote server hosting the website using ispconfig login and password specified in the script it drops and I get the following: Dec 22 11:27:41 server1 postfix/smtpd[21896]: warning: 205.178.145.176: address not listed for hostname v2kcfm8.bos.netsolhost.com Dec 22 11:27:41 server1 postfix/smtpd[21896]: connect from unknown[205.178.145.176] Dec 22 11:27:41 server1 postfix/smtpd[21896]: warning: unknown[205.178.145.176]: SASL LOGIN authentication failed Dec 22 11:27:41 server1 postfix/smtpd[21896]: lost connection after AUTH from unknown[205.178.145.176] Dec 22 11:27:41 server1 postfix/smtpd[21896]: disconnect from unknown[205.178.145.176] I have followed the install instructions to the tee and this the only issue I have come across with the solution.
You must use the username and password of an email user, not the ISPConfig login. The email usernames begin normally with web[ID]_user where [ID] is the ID of the website and user is the username you chose when you creadted the email user.
This seemed to have worked with the first user that was created in the site. When I look at the virtusertable the other users do not have a web id associated. I tested with my script with the way you have suggested and it worked fine for the one user that has a web id but not the for the users without a web id.
All your users should have a prefix like web<id>_, unless you changed that in ISPConfig after you created your first user with web<id>_...
