Re: [Courier-imap] Slow folder operations on new server

[Geoff Soper]

Brian Candler wrote: On Sat, May 06, 2006 at 12:07:42AM +0100, Geoff Soper wrote: Both servers are fresh and not yet in production use so the mail boxes only have a few test mails in them, there's no issue of them being heavily loaded. Can someone suggest what might be the problem, what I can do to diagnose it or any information I can give to help someone diagnose it? telnet 127.0.0.1 143 a login someusername somepassword a examine inbox a logout Is the delay (a) between connection accepted and login banner displayed, (b) between login command and success response, (c) after issuing the 'examine' command? Hi, I just tried this and there's no delay at any point, each command returns results near instantaneously. It did inspire me to change the settings of Squirrelmail from mail.babbnet.com to localhost and this has sorted out the problem for Squirrelmail, however it's still very slow for logging in with an IMAP client remotely such as Thunderbird. This increasingly makes me think it's DNS related, especially bearing in mind the DNS problems the server had originally (not being able to resolve external addresses) which support fixed and then the DNS problem I fixed yesterday (slow to resolve resolve external addresses) by changing the DNS servers listed in /etc/resolv.conf . I'm certain it's something configuration based (if not actually DNS) rather than a fundamental problem as a near identical server I have access to (same hosting company and product) has no such problems. Any ideas what to try next? Thanks, Geoff