Re: [exim] SMTP prompt 30sec delay

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著者: Matt
日付:  
To: Exim Mailing List
題目: Re: [exim] SMTP prompt 30sec delay
> 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.


I had this problem once years ago. The DNS lookups went in an endless
loop tell it timed out due to server misconfiguration and the company
in charge of the pools were clueless. Are you running your own DNS
server? Is it up to date with patches etc? Also, if your running
your own DNS server you could add your own reverse DNS records for
that subnet for use LOCALLY ONLY. Or just tell named its authoritive
but there just are no records.

Also, if your not running your own DNS server and do not want to start
try a different DNS server. Perhaps a different one wont take 30
seconds to time out.

Just my 2 cents.

Matt