Code:
Dec 6 00:19:02 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:02 client104-2 dovecot[1321]: pop3-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:19:02 client104-2 dovecot[1321]: POP3(info@keepingfit.nl): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
Dec 6 00:19:05 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:05 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:05 client104-2 dovecot[1321]: pop3-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:19:05 client104-2 dovecot[1321]: POP3(info@keepingfit.nl): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
Dec 6 00:19:06 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:06 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:06 client104-2 dovecot[1321]: pop3-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:19:06 client104-2 dovecot[1321]: POP3(info@keepingfit.nl): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
Dec 6 00:19:07 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:07 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:07 client104-2 dovecot[1321]: pop3-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:19:07 client104-2 dovecot[1321]: POP3(info@keepingfit.nl): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
Dec 6 00:19:08 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:08 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:08 client104-2 dovecot[1321]: pop3-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:19:08 client104-2 dovecot[1321]: POP3(info@keepingfit.nl): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
Dec 6 00:19:08 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:08 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:08 client104-2 dovecot[1321]: pop3-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:19:08 client104-2 dovecot[1321]: POP3(info@keepingfit.nl): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
Dec 6 00:19:13 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:13 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:13 client104-2 dovecot[1321]: pop3-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:19:13 client104-2 dovecot[1321]: POP3(info@keepingfit.nl): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
Dec 6 00:19:15 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:15 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:19:15 client104-2 dovecot[1321]: pop3-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:19:15 client104-2 dovecot[1321]: POP3(info@keepingfit.nl): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
Dec 6 00:20:16 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:20:16 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:20:16 client104-2 dovecot[1321]: imap-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:20:16 client104-2 dovecot[1321]: IMAP(info@keepingfit.nl): Disconnected: Logged out bytes=44/673
Dec 6 00:20:17 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:20:17 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:20:17 client104-2 dovecot[1321]: imap-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:20:17 client104-2 dovecot[1321]: IMAP(info@keepingfit.nl): Disconnected: Logged out bytes=491/1386
Dec 6 00:20:17 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:20:17 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:20:17 client104-2 dovecot[1321]: imap-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:20:17 client104-2 dovecot[1321]: IMAP(info@keepingfit.nl): Disconnected: Logged out bytes=117/1389
Dec 6 00:20:20 client104-2 dovecot[1321]: auth(default): shadow(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:20:20 client104-2 dovecot[1321]: auth(default): passwd(info@keepingfit.nl,127.0.0.1): unknown user
Dec 6 00:20:20 client104-2 dovecot[1321]: imap-login: Login: user=<info@keepingfit.nl>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
Dec 6 00:20:20 client104-2 dovecot[1321]: IMAP(info@keepingfit.nl): Disconnected: Logged out bytes=117/1389
Dec 6 00:25:46 client104-2 dovecot[1321]: auth(default): shadow(info@ebvdlinden.nl,209.85.218.147): unknown user
Dec 6 00:25:46 client104-2 dovecot[1321]: auth(default): passwd-file(info@ebvdlinden.nl,209.85.218.147): unknown user
Dec 6 00:25:53 client104-2 dovecot[1321]: pop3-login: Disconnected (auth failed, 1 attempts): user=<info@ebvdlinden.nl>, method=PLAIN, rip=209.85.218.147, lip=94.228.215.80