[CentOS] sendmail question

Jerry Geis geisj at pagestation.com
Wed Oct 21 19:26:05 UTC 2009


>
> >/
> />>/ That's a few DNS timeouts.
> />>/
> />>>/ / I have 127.0.0.1 localhost in the /etc/hosts file.
> />>/ />/ 
> />>/ />/ Very odd, any thoughts?
> />>/ /
> />>/ Are you mailing to localhost?
> />>/   
> />/ I tried:
> />/ mail panel
> />/ mail panel at localhost <http://lists.centos.org/mailman/listinfo/centos>
> />/ mail panel at localhost.localdomain <http://lists.centos.org/mailman/listinfo/centos>
> />/ mail panel at machine.domain.com <http://lists.centos.org/mailman/listinfo/centos> (insert actual machine and domain)
> />/ 
> />/ All the above have the same slow 2 minute delay.
> />/ 
> />/ This is odd.
> /
> You still haven't answered how long nslookup takes to respond with these 
> or your IP addresses.  I think sendmail will ask DNS for an MX record 
> first because that's how mail is supposed to work - then if that fails 
> it goes for an A record or your hosts file.
>   
Sorry - missed that one .

nslookup cnn.com comes back fast.

if I do nslookup mymachine.domain.com it comes back with error.

How do I make this resolve faster or something. I have no way to make an 
MX record
for this box. its all just local email. it never leaves the box.

Jerry


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