topic Re: Sendmail Problem in Operating System - HP-UX

Sendmail Problem

roobala — Thu, 22 Feb 2001 20:44:15 GMT

Hi,

We are an ISP setup running sendmail version 8.8.6 and 8.11,
For the last 10 hrs, while trying to sendmail to the local domain, sendmail gives the following error,

"Deferred : Nameserver : -----
Hostname Lookup Failure"

This is not happening while sending mails to outside domains.

Can someone give suggestion for this problem.

Thanks and Regards.

Re: Sendmail Problem

David Rodman — Fri, 23 Feb 2001 13:46:45 GMT

This is almost certainly a name lookup issue. Try running
nslookup on the mx records not just the a records,
Your problem may be a misconfiguaration of the local domain.

Also look at /etc/nsswitch.conf and make sure the hosts options are what you want them to be.

Re: Sendmail Problem

Tracey — Fri, 23 Feb 2001 14:46:05 GMT

Make sure your /etc/hosts file has the line:

127.0.0.1 locahost loopback

Also that the /etc/hosts files has only one line for your host machine.