On Mon, 2004-04-12 at 14:41, Jeremy Fisher wrote: > > So, for example, the outside client is attempting to > connect to the IMAP, POP, or SMTP services and my > server is then (apparently) attempting to resolve a > hostname based on the IP address of the client. There > is no hostname available, but my server still takes > its 10-15 minutes to figure this out. What I want is > to prevent Sendmail and/or Cyrus from bothering with > seeking out a hostname for a client -- given the > nature of my virtual host environment, it's > information that isn't crucial to authentication or > anything else, so far as I know! > 10-15 minutes sounds way too long for a DNS problem, unless the DNS for the client's IP is exceptionally slow to respond. I'd expect a DNS time out to be on the order of 1-2 minutes.
You can check to see if a reverse lookup is really taking that long by getting the client's IP from your cyrus log and executing 'host client-IP' in a shell. If you find that taking 10-15 minutes I'd suggest trying the same thing from some other Internet host to see if the problem is at your end or at the client's end. -- Jim Levie <[EMAIL PROTECTED]> --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
