Andreas Meyer wrote, On 3/21/09 11:16 AM:
Hello!
I tried to setup dovecot to work with IMAP and POP3 but when I connect with Squirrelmail, I get an error saying CREATE "INBOX.Sent" reason: Mailbox doesn't allow inferior mailboxes
That's for user7, right?
The cause of that error is SquirrelMail (using IMAP) is trying to create a mailbox as a child of INBOX, but since user7 is defined as using mbox format, that fails. If you use mbox storage, an IMAP folder can have either messages or subfolders but never both, because when using mbox an IMAP folder containing messages is a file, while an IMAP folder containing subfolders is a directory. See http://wiki.dovecot.org/MailboxFormat/mbox for more info.
There *should* be some way to make SquirrelMail stop trying to create its folders under INBOX, but I have no idea if there actually *is* one. Some IMAP servers only allow the creation of folders as children of INBOX, and as a result some (broken) IMAP clients only know how to create folders that way. You can accommodate such software in Dovecot by using namespaces.
I think you should start by reading http://wiki.dovecot.org/MailLocation and http://wiki.dovecot.org/Namespaces to understand your options.
# dovecot --version 1.0.5
# dovecot -n # 1.0.5: /etc/dovecot/dovecot.conf log_path: /var/log/dovecot protocols: imap imaps pop3 ssl_disable: yes login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(pop3): /usr/lib/dovecot/pop3-login mail_location: maildir:/var/spool/vhosts/%d/%n mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv auth default: passdb: driver: passwd-file args: /etc/dovecot/passwd userdb: driver: passwd-file args: /etc/dovecot/passwd
and /etc/dovecot/passwd looks like this:
anmeyer@anup.de:{PLAIN}password:5000:5000::/var/spool/vhosts/anup.de/anmeyer::userdb_mail=maildir:~/ user7@anup.de:{PLAIN}password7:5000:5000::/var/spool/vhosts/anup.de/user7::userdb_mail=mbox:~/:INBOX=/var/spool/vhosts/anup.de/%u
The mbox of user7 already exists. Can someone help to get both variants working so that dovecot can handle IMAP and POP3 accounts?
This is not about POP3 and IMAP, it is about storage formats. POP3 and IMAP are both able to use either maildir or mbox storage. Users are not restricted to one or the other access protocol, no matter what storage format they use.