Re: [cobalt-users] MX record errors.

["Dan Houghton" <lists@xxxxxxxxxx>]

It's hard to troubleshoot with only a fake domain to go with but the 
below message usually means that sendmail performs a host lookup on the 
MX records to see that itself is the highest MX record (e.g. loop 
statement). 

It will then try to deliver the mail but then can't deliver into a 
mailbox as the user does not exist or more likely the server is unaware 
it should be accepting email for the domain.

Suggest trying the following from command line (telnet or SSH):

host -t mx your-domain.com

EXAMPLE - 

[admin packages]$ host -t mx denial.org
denial.org mail is handled (pri=10) by mx0.dircon.net
denial.org mail is handled (pri=10) by mx1.dircon.net
denial.org mail is handled (pri=5) by mail.denial.org
denial.org mail is handled (pri=8) by mail.denial.org

This will show the MX records so see where the highest value server is 
pointing - I would guess it's your Cobalt.

sendmail -bv j@xxxxxxxxxxxxxxx

EXAMPLE -

[admin packages]$ /usr/sbin/sendmail -bv lists@xxxxxxxxxx
lists@xxxxxxxxxxxxx deliverable: mailer local, user lists

If the output of the first command shows your server as the authorative 
then the second command does not return an output like the above then 
the server doesnot know what to do with the email.

EXAMPLE OF NON-LOCAL DELIVERY -

[admin packages]$ /usr/sbin/sendmail -bv billy_gates@xxxxxxxxxxxxx
billy_gates@xxxxxxxxxxxxxxxx deliverable: mailer esmtp, host 
microsoft.com., use
r billy_gates@xxxxxxxxxxxxx

Address is still valid but it's not local.

Would need to know the real domain if it's not the above.

Dan





> Greetings,
> 
> I'm receiving errors from sendmail for the following message. (domain 
name is
> an example.)
> 
> >    ----- The following addresses had permanent fatal errors -----
> ><j@xxxxxxxxxx>
> >     (reason: system config error)
> >
> >    ----- Transcript of session follows -----
> >553 5.3.5 www.domain.com. config error: mail loops back to me (MX 
> >problem?)
> >554 5.3.5 <j@xxxxxxxxxx>... Local configuration error
> 
> At first I thought it was the DNS record error for www, but my www 
record
> is an Address record. So, things looked ok.  Has anyone see and 
solved this 
> problem?
> 
> Thanks in advice.
> 
> 
> 
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