3 messages in net.sourceforge.lists.courier-users[courier-users] Can't send mail to na...
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Shawn M. JonesFeb 18, 2007 11:07 am 
Manuel Schneider [Everything Open]Feb 18, 2007 11:23 am 
Shawn M. JonesFeb 18, 2007 11:37 am 
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Subject:[courier-users] Can't send mail to navy.mil - DNS lookup failedActions...
From:Shawn M. Jones (sm@littleprojects.org)
Date:Feb 18, 2007 11:07:42 am
List:net.sourceforge.lists.courier-users

Hi folks,

I'm sure I'm doing something wrong here because all of the online mail services I've tested from seem to be able to successfully send and receive mail from navy.mil, but my courier mailserver cannot do either.

The email that is sent back to me gives me the following error message:

<<< DNS lookup failed.

And, in fact, looking up navy.mil returns nothing:

12:41:41 smj@thoth:~ --> host navy.mil 12:41:46 smj@thoth:~ -->

When I look up the MX record with dig, I do get something, which is what I assume Courier is doing.

In /etc/courier/esmtpd, I set BOFHCHECKDNS from 1 to 0 to see if it made any difference, but to no avail.

This is quite annoying and I'm not sure what else to do. I don't seem to have any problems sending/receiving mail to any other domain that I know of.

This is likely something really simple that I've mis-set, but I'm not sure how or what.

Any assistance would be greatly appreciated.

Sincerely,

Shawn M. Jones