Hostname Lookup Delay and Timeout

Cyrus Daboo daboo at cyrusoft.com
Tue Apr 13 12:34:45 EDT 2004


Hi Jeremy,

--On Tuesday, April 13, 2004 8:22 AM -0700 Jeremy Fisher 
<jeremyfisher at yahoo.com> wrote:

| It's a good thought, and I've tried that from the
| shell. Took a few seconds to figure out that there was
| no hostname available for the IP address -- not ten
| minutes! So I'm not sure if Sendmail and Cyrus are
| calling a separate process that is more persistent in
| its attempts to get the hostname, or if they are just
| that stubborn on their own (in which case, there must
| be a feature to disable this somewhere).
|
| As a temporary fix, I took the offending IP address
| and added it to the /etc/hosts file (performance is
| now lightning fast, of course). The more I look at
| this, the more it appears that it is a general DNS
| problem of some sort.

Also check to see whether you have identd running. A quick google on identd 
delays produced the following at the top of the results:

<http://www.exocore.com/technologies/linux/identd/>

-- 
Cyrus Daboo
---
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