4 Replies Latest reply: May 21, 2013 10:10 AM by Luke Siemaszko1
Luke Siemaszko1 Level 1 Level 1

10.6.8 server on Mac Mini

doing DNS, AFP, Mail, iCal, OD for 8 users


Clients are all 10.6.8 on Mac Mini


Mail is IMAP

Mail is well behaved 98% of the time

But sometimes, on a client, when I try and move a message fro mmy inbox to another mailbox, it says "the message coudl not be moved to mailbox xxxxx"

If I try again immediately afterwards, it always works


So I doubt it is anything like a corrupt envelope index, because that would result in persistant problems.


It's as if the mail server isn't listening momentarily.



This is a fairly fresh build of the OS from DVD.  Previous build did exactly the same ting.



Woudl be very grateful for any ideas.

Mac mini (Late 2009), OS X Server, 10.6.8
  • MrHoffman Level 6 Level 6
    Mac OS X

    Well, check your DNS services for starters.  DNS errors and timeouts can cause weird and transient errors.  If you're on a NAT'd local area network as is typical, make sure you have no references to any ISP DNS servers; no references to any DNS servers off of your LAN.

  • Luke Siemaszko1 Level 1 Level 1

    Thank you for your reply.


    Yes we are on a NAT'd LAN.


    Client DNS is solely the local server


    Server DNS service only provides our one local domain, has forwarder adresses set to and (Google).


    I am not confident, but I don't *think* this is the problem because DNS takes some time to timeout (15s?) and the error message above comes up almost instamntaneously.  ie too quick to be a DNS timeout.


    If it was a DNS problem, what would I see in which log?  named.log on the server is empty. 

    I'm not sure what to look for in logs on the client?


    Thank for any further ideas.

  • MrHoffman Level 6 Level 6
    Mac OS X

    To verify the server DNS, launch Terminal.app from Applications > Utilities on the OS X Server box and issue the non-destructive diagnostic command:


    sudo changeip -checkhostname


    The clients would have references only to your local DNS server(s), visible via the client Network Preferences settings.  (These DNS server settings are usually either hard-set in the client, or acquired from DHCP by the client.)


    You'll want to use Console.app or direct access to the /var/log directory (on the server), and see what gets logged when the mail message move operation fails.


    As a preemptive operation, I'd also rebuild the mailboxes involved (on the client(s) involved).  I've seen a few mailbox corruptions over the years, but not one that caused this behavior.

  • Luke Siemaszko1 Level 1 Level 1



    changeip returned "The names match.  There is nothing to change".  So all OK there.


    I will rebuild the mailboxes as you suggest.


    And I'll wait for it to go wrong and loook at the log.  May take a week or 2.