Hi,

when I updated Dovecot from 1.1.8 to 1.1.10, it changed the username from account@domain.tld to account@account@domain.tld thus not authenticating.

mail Feb 1 09:45:51 count-bubba dovecot: auth-worker(default): auth(mail,85.177.168.174): username changed mail -> mail@fathomssen.de Feb 1 09:45:51 count-bubba dovecot: auth(default): client out: OK 1 user=mail@fathomssen.de Feb 1 09:45:51 count-bubba dovecot: auth(default): master in: REQUEST 505 27174 1 Feb 1 09:45:51 count-bubba dovecot: auth-worker(default): sql(mail@fathomssen.de,85.177.168.174): SELECT uid, gid, home FROM pop_access
WHERE ( (id = 'mail' AND mbox_host = 'fathomssen.de') OR (id = SUBSTRING_INDEX('mail', '@', 1) AND mbox_host = SUBSTRING_INDEX('mail', '@', -1)) ) AND active = '1' Feb 1 09:45:51 count-bubba dovecot: auth(default): master out: USER 505 mail@fathomssen.de uid=500 gid=500 home=/var/www/sites/fathomssen/fathomssen.de/Mailboxs/mail Feb 1 09:45:51 count-bubba dovecot: imap-login: Login: user=mail@fathomssen.de, method=PLAIN, rip=85.177.168.174, lip=78.47.39.122, TLS Feb 1 09:45:51 count-bubba dovecot: auth(default): new auth connection:

From logs: #### (Before update) Feb 1 09:45:51 count-bubba dovecot: auth(default): client in: AUTH 1 PLAIN service=imap secured lip=78.47.39.122 rip=85.177.168.174 lport=143 rport=38118 resp=<hidden> Feb 1 09:45:51 count-bubba dovecot: auth-worker(default): sql(mail@fathomssen.de,85.177.168.174): query: SELECT id AS user, mbox_host AS domain, passwd AS password FROM pop_access WHERE ( (id = 'mail' AND mbox_host = 'fathomssen.de') OR (id = SUBSTRING_INDEX('mail', '@', 1) AND mbox_host = SUBSTRING_INDEX('mail', '@', -1)) ) AND active = '1' Feb 1 09:45:51 count-bubba dovecot: auth-worker(default): auth(mail@fathomssen.de,85.177.168.174): username changed mail@fathomssen.de - pid=9277 ####

mail Feb 1 15:23:13 count-bubba dovecot: auth-worker(default): auth(mail,85.177.168.174): username changed mail -> mail@fathomssen.de Feb 1 15:23:13 count-bubba dovecot: auth(default): auth(mail@fathomssen.de,85.177.168.174): username changed mail@fathomssen.de - mail Feb 1 15:23:13 count-bubba dovecot: auth(default): auth(mail,85.177.168.174): username changed mail -> mail@mail@fathomssen.de Feb 1 15:23:13 count-bubba dovecot: auth(default): client out: OK 1 user=mail@mail@fathomssen.de Feb 1 15:23:13 count-bubba dovecot: auth(default): master in: REQUEST 2 15962 1 Feb 1 15:23:13 count-bubba dovecot: auth-worker(default): sql(mail@mail@fathomssen.de,85.177.168.174): SELECT uid, gid, home FROM

#### (After update) Feb 1 15:23:13 count-bubba dovecot: auth(default): client in: AUTH 1 PLAIN service=imap secured lip=78.47.39.122 rip=85.177.168.174 lport=143 rport=54903 resp=<hidden> Feb 1 15:23:13 count-bubba dovecot: auth-worker(default): sql(mail@fathomssen.de,85.177.168.174): query: SELECT id AS user, mbox_host AS domain, passwd AS password FROM pop_access WHERE ( (id = 'mail' AND mbox_host = 'fathomssen.de') OR (id = SUBSTRING_INDEX('mail', '@', 1) AND mbox_host = SUBSTRING_INDEX('mail', '@', -1)) ) AND active = '1' Feb 1 15:23:13 count-bubba dovecot: auth-worker(default): auth(mail@fathomssen.de,85.177.168.174): username changed mail@fathomssen.de - pop_access WHERE ( (id = 'mail' AND mbox_host = 'mail@fathomssen.de') OR (id = SUBSTRING_INDEX('mail', '@', 1) AND mbox_host = SUBSTRING_INDEX('mail', '@', -1)) ) AND active = '1' Feb 1 15:23:13 count-bubba dovecot: auth-worker(default): sql(mail@mail@fathomssen.de,85.177.168.174): Unknown user Feb 1 15:23:13 count-bubba dovecot: auth(default): userdb(mail@mail@fathomssen.de,85.177.168.174): user not found from userdb sql Feb 1 15:23:13 count-bubba dovecot: auth(default): master out: NOTFOUND 2 Feb 1 15:23:13 count-bubba dovecot: imap-login: Internal login failure (auth failed, 1 attempts): user=, method=PLAIN, rip=85.177.168.174, lip=78.47.39.122, TLS ####

As you see, mail@fathomssen.de (the correct login name) was changed to mail@mail@fathomssen.de and could not be authenticated.

#### count-bubba ~ # dovecot -n # 1.1.8: /etc/dovecot/dovecot.conf # OS: Linux 2.6.28 x86_64 Gentoo Base System release 1.12.12 protocols: imap imaps pop3 pop3s ssl_cert_file: /etc/ssl/dovecot/server.pem ssl_key_file: /etc/ssl/dovecot/server.key disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login mail_location: maildir:~/Maildir mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_plugin_dir(default): /usr/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 auth default: passdb: driver: sql args: /etc/dovecot/dovecot-sql.conf userdb: driver: sql args: /etc/dovecot/dovecot-sql.conf socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix master: path: /var/run/dovecot/auth-master mode: 384 user: dtc ####

#### count-bubba ~ # grep -v '^ *\(#.*\)\?$' /etc/dovecot/dovecot-sql.conf driver = mysql connect = host=localhost port=3306 dbname=you user=get password=the_idea default_pass_scheme = PLAIN-MD5 password_query = SELECT id AS user, mbox_host AS domain, passwd AS password FROM pop_access WHERE ( (id = '%n' AND mbox_host = '%d') OR (id = SUBSTRING_INDEX('%n', '@', 1) AND mbox_host = SUBSTRING_INDEX('%n', '@', -1)) ) AND active = '1' user_query = SELECT uid, gid, home FROM pop_access WHERE ( (id = '%n' AND mbox_host = '%d') OR (id = SUBSTRING_INDEX('%n', '@', 1) AND mbox_host = SUBSTRING_INDEX('%n', '@', -1)) ) AND active = '1' ####

Best regards,

Freddy Thomssen

Frederick Alexander Thomssen

http://fathomssen.de mail@fathomssen.de