[plug] Mail help

[Craig Ringer]

 > Joong Cho wrote:

>
>> Hello,
>>
>> Whenever I said a mail to webmaster at startreklibrary.com, I get the 
>> following error message:
>>
>> <webmaster at startreklibrary.com>: Host or domain name not found. Name 
>> service error for name=joongcho.com type=A: Host found but no data 
>> record of requested type
>>
>> How do I prevent this type of message from occuring or what do I need 
>> to do in order to prevent this message?
>
>
Oddly enough, it does seem to be - one MX, pointed at joongcho.com . The 
issue is that he has failed to configure an A record on joongcho.com.

Joong, as I told you several months ago www.<domainname>.com and 
<domainname.com> are not the same domain - the 'www' is a host on, or 
subdomain of, domainname.com . Both must be configured for some things 
to work. You must either add an A record to joongcho.com, or make your 
MX record point to www.joongcho.com, because they are NOT the same 
thing. Please refer to our earlier discussions on this matter.

>
>> Also, whenever I send mail to info at joongcho.com or 
>> info at startreklibrary.com, I get the following postfix message.
>>
>> < info at joongcho.com > : unknown user: "info"
>>
>> How do I add user's in postfix?
>
>
$ adduser info

Unless configured otherwise, a mail user is a system user. Each system 
user is assumed to have an email address (among possibly others) of the 
form ${USER}@`hostname -a` . If you want a user info at joongcho.com, add a 
user 'info' on the joongcho.com server. If you want more control than 
that, you're getting into virtual user maps, etc etc - and I doubt you 
want to try that quite yet.

If you actually want to make an alias for that name that delvers to a 
different real name, see "man aliases" and don't forget to run 
newaliases after you edit /etc/aliases .

--
Craig Ringer