Please help me.. I have followed tutorial install ispconfig 3 on ubuntu 20.04 . Ispconfig has been completed.. when i am logged in to roundcube and send email got smtp error 250 authentication failed. Please help me
Postfix conf looks ok. I trust you have yourself also compared it character by character to the Perfect Server Guide? And make sure on the server the filename does not end with .txt. Try Internet Search Engines with Code: smtp error 250 authentication failed site:howtoforge.com Maybe add roundcube if none of those help.
Now it is working... thanks for your help.. I have changed /etc/roundcube/config.inc.php smtp_port to 25 , and it works.