Indeed, I set its value to empty to allow all characters and it now works. Thanks a lot Timo.
________________________________ De : Timo Sirainen <t...@iki.fi> À : Christian Gregoire <cgregoi...@yahoo.com>; Dovecot Mailing List <dovecot@dovecot.org> Envoyé le : Mardi 30 octobre 2012 14h08 Objet : Re: [Dovecot] POP3 Proxy : user format not accepted On 30.10.2012, at 14.01, Christian Gregoire wrote: > Any idea ? Is the '#' not internally supported in the user login by Dovecot ? See auth_username_chars setting.