[Dovecot] decreasing log messages

Hi,

Since I use "/usr/sbin/dovecot --exec-mail imap" from mutt I get a lot of these in my syslog:

Apr  3 11:09:33 zenon IMAP(ldm): : Connection closed bytes=36/256

Is it possible to suppress them while keeping the "remote users" messages:

Apr  3 10:52:05 zenon dovecot: IMAP(xxxxx): Connection closed bytes=9420/5976987
Apr  3 10:52:08 zenon dovecot: imap-login: Login: user=<xxxxx>, method=PLAIN, ri
p=xx.xx.xx.xx, lip=xx.xx.xx.xx, TLS

Thanks,