Hello, Please refer to https://issues.apache.org/jira/browse/JAMES-3525
TL;DR Your MAIL FROM is the one of a local user. If we accept the email without authentication, anybody could trivially still your identity, which would be a major security flow. Regards, Benoit On 17/08/2021 20:09, Wirth, Felix Nikolaus wrote: > Dear James Community, > > I tried out the Docker image apache/james:demo-3.6.0 as described on the > Apache James landing page as well as > here<https://james.staged.apache.org/james-project/3.6.0/servers/demo.html>. > Starting the image works and I can also add the mail addresses of the users > with the domains james.local and test.local to Thunderbird. After adding, the > IMAP connection to check for new e-mails works as well (although ofc, there > are none). However, I cannot send e-mails by SMTP to one of the user users or > the same user. The error I see in Mozilla is "Authentication required". I do > not see entries in /log/james.log which I can refer to the SMTP topic. > I got the same problem on a Windows and a Linux host. > > I don't know what I am doing wrong here. > Does anybody can tell me how to fix this problem? > Any help is much appreciated. > > Thanks in advance > > Felix > > --------------------------------------------------------------------- To unsubscribe, e-mail: server-user-unsubscr...@james.apache.org For additional commands, e-mail: server-user-h...@james.apache.org