These aren't errors, they are simply telling you that a message having the
particular message id has already been delivered to the recipient and will not
be delivered again. This is probably spam, or a mailing list message.
Ken
Quoting imaplist <[EMAIL PROTECTED]>:
> Oct 31 01:52:43 mailb
Oct 31 01:52:43 mailb lmtpd[3032]: dupelim: eliminated duplicate message to
user.user91 id <20011
[EMAIL PROTECTED]>
Oct 31 01:52:43 mailb lmtpd[3035]: dupelim: eliminated duplicate message to
user.user69 id <20011
[EMAIL PROTECTED]>
Oct 31 01:52:43 mailb lmtpd[3036]: dupelim: eliminated duplica