Harald Strack wrote:
imap: dovecot-1.1.10 (pam-unix, no direct LDAP access)
pop: dovecot-1.0.14 on another server (pam-unix, no direct LDAP access)
we are using dovecot-1.1.0 since two month as main IMAP server. It
These are all very very old. These versions certainly have bugs, perhaps
also one which you stumbled on.
I suggest you upgrade to 1.1.20 or, better, to 1.2.8 (some configuration
changes may be needed).
If the problem remains afterwards, there might be people willing to help.
HTH,
Jakob Curdes