Hostname Lookup Delay and Timeout

[Jeremy Fisher]

> > I have a client who is connecting to IMAP and/or
> POP
> > services and is waiting 10-15 minutes to
> successfully
> > check his mail. I think it may have something to
> do
> > with the fact that his ISP is not providing him
> with a
> > hostname, and for some reason IMAP (or my FreeBSD
> box
> > in general?) is attempting to lookup his hostname.
> 
> 
> Yup, sounds like a DNS problem to me, especially the
> sendmail problem. Try
> adding an entry in /etc/hosts for the hostname, if
> there is not one there.
> 
> Doug

Thanks, Doug. All of my virtual hosted domains
(several of them) have entries in the /etc/hosts file.
However, the DNS resolution problem is related to an
external client (totally separate ISP).

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!

Does this help at all...?

Jeremy

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