[CentOS] IMAPS error with Dovecot?

Tue May 20 17:44:13 UTC 2008
Benjamin Smith <lists at benjamindsmith.com>

I'm using Dovecot to support IMAPS on CentOS4 on port 993. Stock RPMS, 
absolutely nothing special done or even anything compiled on the system. 
About as usual as usual usually gets. 

But, using KMail on my Fedora Linux laptop, I keep getting the following 
message: (in part) 

"This means that although the resource, Changing the flags of message 
failed., was able to be opened, an error occurred while writing to the 

Changing the flags of message 

It happens whever I mark a message as "read" and then resynch up with imap. I 
can *delete* messages just fine, I just can't change the flags on a message. 
I've scanned thru the /var/log/maillog, /var/log/secure, /var/log/messages 
and found nothing out of the ordinary. I've checked the permissions of 
the /var/spool/mail/myaccount and /home/myaccount/Mail folders - both are 

I have another, almost identically configured mail server that is not having 
the same issue. I've tried refreshing my cache, and rebuilding indexes in my 
email program. 

I'm stumped. Any idea where to go next for this? 

Only those who reach toward a goal are likely to achieve it. 

This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.