Hello, we're trying to setup a platform with authenticated SMTP with exim and relying on dovecot as auth agent.

We've read http://wiki2.dovecot.org/HowTo/EximAndDovecotSASL and so made the changes mentioned there, also setting

auth_mechanisms = plain login

in conf.d/10-auth.conf .

With this setup, we're able to use AUTH LOGIN method on an SMTP session, but using AUTH PLAIN fails.

What we receive in the SMTP session is:

auth plain echo -e -n \0user\0password' | mimencode` 535 Incorrect authentication data

(it's actually the output of that command that we put there), and in the dovecot log we see:

2012-05-24 15:04:20 auth: Debug: client in: AUTH 1 PLAIN service=smtp secured rip=127.0.0.1 lip=127.0.0.1 nologin resp=<hidden> 2012-05-24 15:04:20 auth: Info: plain(?,127.0.0.1): invalid input

Do you know where we can look to resolve this problem? If you need any further information/test feel free to ask.

Thanks in advance?

Sandro Tosi Product Engineer Shared Hosting Products R&D | Dada.pro eml sandro.tosi@register.it