Re: [Exim] strange failure to lookup IP address

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著者: Philip Hazel
日付:  
To: Tom Davidson
CC: exim-users
題目: Re: [Exim] strange failure to lookup IP address
On Wed, 30 Jul 2003, Tom Davidson wrote:

> Why does exim's default behaviour seem to be to do a DNS lookup rather than
> obey the OS lookup settings (eg. the hosts setting in /etc/nsswitch.conf on
> Solaris)? Is this because most installations of Exim will be talking
> directly to the Internet and so can use MX records?


Yes. Exim is an MTA for delivering mail over the Internet. It kind of expects
to be connected to the Internet... :-)

[In this case it isn't looking for MX records, but for A records.]

> Still would have thought it would use the OS settings, but could be
> forced otherwise...


It's the other way round.

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book:    http://www.uit.co.uk/exim-book