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Old 12-22-2008, 04:36 PM   #1
cipher7836
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General Sendmail Question


Sorry this question sounds REALLY stupid but...Why is it that when I use "sysctl kernel.hostname=server.its-actual-dns-name-to-reach-on-the-internet.com" I can email myself, however, when I change the name to "whateverifeellike" I get a message that the user I am emailing is not found. In fact no one I email does it work. Where can I change this in the server so that it knows it is called "whateverifeellike" and it goes ahead and sends the email?
 
Old 12-22-2008, 05:22 PM   #2
ilikejam
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Have a squiz at this:
http://www.harker.com/sendmail/accept.local.domain.html

Looks like it should be fixed if you add server.its-actual-dns-name-to-reach-on-the-internet.com to /etc/hosts for your machine's IP address, or set LOCAL_DOMAIN as described.

Dave
 
Old 12-22-2008, 05:22 PM   #3
ilikejam
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Double post.

Last edited by ilikejam; 12-22-2008 at 05:23 PM.
 
Old 12-23-2008, 07:56 AM   #4
cipher7836
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Weird

Here's the weird thing....the correct name is in the /etc/hosts file.


The name of the server is server.dallas.com. (Not really but you get the point). One of our techs wants to name it Server_Dallas so when he logs on via ssh he can keep track of it and not get confused with any other machines he logs into. So he does sysctl kernel.hostname=Server_Dallas. After he does that Sendmail refuses to send any email to us when I try:

mail user@gmail.com. I can post the log files if it will help. When I open /etc/hosts I see the correct IP with server.dallas.com in there AND Dallas_PBX.

When I use the command "hostname" I see "Server_Dallas". I then use sysctl kernel.hostname=server.dallas.com. I type hostname again and see "server.dallas.com". Now when I email it works. What the!?
 
Old 12-23-2008, 08:33 AM   #5
ilikejam
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That is a bit odd.

I'd just set LOCAL_DOMAIN in the sendmail config, and forget any of this ever happened.
You might want to suggest to your tech that he changes his $PS1 variable, instead of changing the machine's hostname.

Dave
 
  


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