Hello,

I have a serious problem with dovecot and mbox format. dovecot returns the same UIDL for new messages and as result some MUAs don't retrieve new mail.

UIDs returned by UIDL command look like 000000*1c*49006cec And there is a moment when dovecot stops incrementing marked digits. In other words when new message arrive to mbox, UIDL command returns used UID.

I'll show with example:

1. Send some message and try to retrieve UIDL via telnet:

echo test-mailbox-1 | mail -s Test-1 mbox@cu.kiev.ua

# telnet pop3.cu.kiev.ua 10110 Trying 193.108.130.4... Connected to emx.itcons.net.ua. Escape character is '^]'. +OK IT Consulting POP3/IMAP Server USER mbox@cu.kiev.ua +OK PASS XXX +OK Logged in. LIST +OK 1 messages: 1 1155 . UIDL +OK 1 0000001c49006cec . RETR 1 +OK 1155 octets [...] . DELE 1 +OK Marked to be deleted. QUIT +OK Logging out, messages deleted. Connection closed by foreign host.

2. Send another message and try to retrieve UIDL via telnet:

echo test-mailbox-1 | mail -s Test-1 mbox@cu.kiev.ua

# telnet pop3.cu.kiev.ua 10110 Trying 193.108.130.4... Connected to emx.itcons.net.ua. Escape character is '^]'. +OK IT Consulting POP3/IMAP Server USER mbox@cu.kiev.ua +OK pass XXX +OK Logged in. UIDL +OK 1 0000001c49006cec . QUIT +OK Logging out. Connection closed by foreign host.

My dovecot's version is 1.1.3. # 1.1.3: /usr/local/etc/dovecot.conf base_dir: /var/run/dovecot/ protocols: pop3 listen: *:10110 ssl_disable: yes disable_plaintext_auth: no shutdown_clients: no login_dir: /var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/pop3-login login_greeting: IT Consulting POP3/IMAP Server login_processes_count: 64 verbose_proctitle: yes first_valid_uid: 26 last_valid_uid: 26 first_valid_gid: 6 last_valid_gid: 6 mail_privileged_group: mail mail_location: mbox:/var/mail:INBOX=/var/mail/%Ln:INDEX=MEMORY maildir_copy_preserve_filename: yes mail_executable: /usr/local/libexec/dovecot/pop3 mail_plugins: quota mail_plugin_dir: /usr/local/lib/dovecot/pop3 pop3_client_workarounds: outlook-no-nuls oe-ns-eoh auth default: passdb: driver: sql args: /usr/local/etc/dovecot/passdb.sql userdb: driver: sql args: /usr/local/etc/dovecot/mailbox.sql userdb: driver: sql args: /usr/local/etc/dovecot/maildir.sql plugin: quota: maildir

-- MINO-RIPE