On Wed, 17 Sep 2008, Mike Grayver wrote:
> I have this problem because reverse DNS is broken ( the DNS query
> returns SERVFAIL ) for one of subnets and it takes 30sec for Exim to
> timeout and generate SMTP prompt.
> Is it possible configure EXIM don't do reverse DNS for some IP
> addresses.
Get the DNS server fixed, rather than working around the issue?
Jethro.
>
> Thanks.
> Mike.
>
> -----Original Message-----
> From: exim-users-bounces@??? [mailto:exim-users-bounces@exim.org]
> On Behalf Of Eli Sand
> Sent: Wednesday, September 17, 2008 6:05 AM
> To: exim-users@???
> Subject: Re: [exim] SMTP prompt 30sec delay
>
> > It takes 30sec to get SMTP prompt if reverse DNS resolution for the
> > Connecting client IP address returns SERVFAIL error. Can I make exim
> > ignore this error and produce SMTP prompt without delay for one
> > client..
>
> You may have "host_lookup" set to * which would make it do DNS lookups
> for
> every host that connects. I don't know if it does reverse DNS, but this
> may
> likely be the issue. If not, check your connection ACLs to see if
> anything
> is being done that with DNS.
>
> Eli.
>
>
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Jethro R Binks
Computing Officer, IT Services
University Of Strathclyde, Glasgow, UK
