hostname question

[Bryan Cassidy]

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I got a quick question (just one for this minute).

I was told I should add a hostname. (my domain name maybe?
bsdjunky.dyndns.org? Will that do?) He said I should put an entry in
/etc/hosts that maps the IP of your box to the hostname you gave it.
Then put that hostname into main.cf. How would I go about adding a
hostname to /etc/hosts that maps the IP of my box? I use DHCP if that
matters. Never added anything to /etc/hosts before so don't know the
syntax or anything about what I should add. Just add simply on the first
line without any whitespaces bsdjunky.homeunix.org or something else? 

Thanks,
Bryan
 
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