topic Re: Sendmail gethostbyaddr failure in Operating System - HP-UX

Sendmail gethostbyaddr failure

MTSU_SAN — Thu, 01 Aug 2002 13:57:52 GMT

I just added a new lan dedicated to it's own network, and sendmail 8.11.1 is generating
Aug 1 09:46:22 frank sendmail[29941]: gethostbyaddr(192.1.1.2) failed: 1
errors. I would like to know how to reconfigure it to stop paying attention to this lan.

Re: Sendmail gethostbyaddr failure

Stefan Farrelly — Thu, 01 Aug 2002 14:03:26 GMT

Add an entry to your /etc/hosts files for 192.1.1.2

and ensure your /etc/nsswitch.conf (DNS lookup) file is configured to check hosts also;

hosts: dns [NOTFOUND=continue] files

Then when you do; nslookup 192.1.1.2
it will resolve so gethostbyaddr will not produce an error.

Re: Sendmail gethostbyaddr failure

Sajid_1 — Thu, 01 Aug 2002 14:03:50 GMT

This link will help you to solve the issue:
http://support2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=500000000092459

Re: Sendmail gethostbyaddr failure

John Dvorchak — Thu, 01 Aug 2002 14:04:04 GMT

I don't know if you can. But you can make and entry in /etc/hosts resolving that address and the errors will quit. Of course you will have to make sure that you host looks in /etc/hosts via the /etc/nsswitch.conf file if present.

Re: Sendmail gethostbyaddr failure

Christopher McCray_1 — Thu, 01 Aug 2002 14:04:19 GMT

Hello,

I'm assuming you are using dns and the new lan cards are entered in /etc/hosts.

Make sure your /etc/nsswitch.conf looks like this:

hosts: dns [NOTFOUND=continue UNAVAIL=continue TRYAGAIN=continue] files

What I believe is happening is that you have return instead of continue, which means that if the ip isn't found, it bombs. Having continue lets it go on to files if not found in dns.

Hope this helps

Chris

Re: Sendmail gethostbyaddr failure

Hai Nguyen_1 — Thu, 01 Aug 2002 14:04:34 GMT

Jerry,

If you are using /etc/hosts for host name lookup, add a fake_hostname associated with this IP.

Is it true that it takes 2,3 minutes each time you restart sendmail manually currently?

Hai

Re: Sendmail gethostbyaddr failure

Bill McNAMARA_1 — Thu, 01 Aug 2002 14:06:18 GMT

try adding
192.1.1.2 frankie frankie.

into /etc/hosts
just the dot will do..

Later,
Bill

Re: Sendmail gethostbyaddr failure

MTSU_SAN — Thu, 01 Aug 2002 14:14:22 GMT

Thanks everyone. When I did a search on forums, Manuals and documents for "sendmail + gethostbyaddr" why didn't the darn thing find the document referenced?!