Exim.conf help needed please

can someone help me future understand the following two sections. with # local_domains_include_host_literals , i only want it to work for 1 domain and not the enter server. and fir #host_lookup = 0.0.0.0/0 do i have to put anything in place of the 0.0.0.0/0 ? if so what goes there? server host IP.

I'm having a problem with receive mail from mms.mycingular.com on my server. the error message that i get back is "... Deferred: Name server: mydomain.com.: home name lookup failure Message could not be delievered... " i just noticed something is there suppose to be a "." after the .com? anyway that might be nothing since that's the way your suppose to enter domains in the Zone files.

# If you want to accept mail addressed to your host's literal IP address, for
# example, mail addressed to "user@[111.111.111.111]", then uncomment the
# following line, or supply the literal domain(s) as part of "local_domains"
# above.

# local_domains_include_host_literals


# The setting below causes Exim to do a reverse DNS lookup on all incoming
# IP calls, in order to get the true host name. If you feel this is too
# expensive, you can specify the networks for which a lookup is done, or
# remove the setting entirely.

#host_lookup = 0.0.0.0/0

 

 

 

 

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