local user cannot send mail to another local user in the same domain

[Pavani]

Forum

I have a set up like below

NIS enabled server and workstations
I can send mail from Server to workstation
But a local user at workstation cannot send mail to
users at server or any users in the other workstation

I get a message
deferred mail server wkst1@gsmomc3
host name lookup failed

But the nslookup command can lookup NIS server .
I have set in sendmail.cf the domian as gsmomc3
checked sendmail.cw as per HP guide
and also restof files for mailing
pl suggest

Thanking you in advance
Pavani

[Helen French]

Hi Pavani:

This can be a name resolution issue. There can be a problem with your DNS entries. If the /etc/nsswitch.conf file has a DNS entry, then the server MUST be set up so that it can
access a working nameserver.

Look at your /etc/resolv.conf file. If you are using DNS, there should be a valid nameserver entry. If it does not contain a functioning nameserver, then you will need to edit the /etc/nsswitch.conf file and remove the reference to DNS from the hosts line.

HTH,
Shiju

[Jeff Schussele]

I would suspect the NIS client configurations or client-to-server comm. Check the /etc/rc.config.d/namesvrs file on the clients - make sure ONLY NIS_CLIENT is =1 & the NIS_DOMAIN value is correct.
Run:
/sbin/init.d/nis.client stop
/sbin/init.d/nis.client start
to bounce the NIS client.

Verify the /etc/nsswitch.conf file - make sure these lines
hosts: nis
aliases: nis
are starting as such - can have actions after.....
Run ypwhich on the clients to verify just what NIS server they are using.
Run
rpcinfo -u nis_server ypserv
rpcinfo -t nis_server ypserv
to verify NIS server is up OK

HTH,
Jeff

[Clemens van Everdingen]

Hi,

See the following thread:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xf39306295e00d6118ff40090279cd0f9,00.html

C.

[Pavani]

Hi All

Thanks for the sugesstions

below are the current settings

file nsswitch.conf
hosts: nis [NOTFOUND=return UNAVAIL=continue] files[NOTFOUND=return UNAVAIL=continue TRYAGAIN=return]

file sendmail.cf
Dj$w.GSMOMC3

file service.switch
hosts files
aliases files

file sendmail.cw
localhost
wtsc10
wtsc10.GSMOMC3

I have alredy checked the pointed question answer.But some times its confusing since
every one mentions same files but changes a lot due to small differnt network configuration

ouput of commands
rpcinfo -t ctsomc3 ypserv
program 100004 version 1 ready and waiting
program 100004 version 2 ready and waiting
rpcinfo -u ctsomc3 ypserv

program 100004 version 1 ready and waiting
program 100004 version 2 ready and waiting

I started NIS at the clients
Namesvrs file is also fine

Why root or NIS user at server can mail any local user or NISuser@client but not viceversa.Due to config constraints I cannot mount /var/mail of all users at client.

Chow
Pava

[Pavani]

Hi

There is no /etc/resolve.conf
in the system.
I guess i need not created it as we arenot using DNS.
We have NIS server and clients

Actually Iam not very clear of this DNS and again the command
domainname .

If we have not enabled DNS
then what is the domainname .
is it a part of NIS .

thanks
pavani

[U.SivaKumar_2]

hi,
domainname command is meant for NIS only.
you can set the NIS parameters in /etc/rc.config.d/namesvr file.

regards,
U.SivaKumar

[Berlene Herren]

hosts: nis [NOTFOUND=return UNAVAIL=continue] files[NOTFOUND=return UNAVAIL=continue TRYAGAIN=return]

This looks like to be that if it cannot find the hostname in nis, it returns, instead of continuing to the hosts file.

Berlene

[Pavani]

Hi Berlene

Thankyou.
I changed nis as continue for both options but it still dosent work and i get same error message

Chow
Pavani

[U.SivaKumar_2]

hi,
give this from workstation
#ypmatch "yourservername" hosts
what is the output ?.
regards,
U.SivaKumar

[Pavani]

Hello Siva

Thanks for the quick response
I guess some thing is missing in mapping at servers end
I get below message when i give

ypmatch servername hostname

ypmatch cant match ctsomc3
reason : no such map map in servers NIS domain

How do I map now

[Pavani]

Hello Siva

I made a mistake in command before

ypmatch servername hosts
gave me output as
ipaddress servername server alias

is that okay

[U.SivaKumar_2]

hi,
Is the IP address and server name in the output of ypcat comand shows the proper server name with it's proper IP address ?. if yes try
this
#telnet "yourservername" 25
do you get connection to smtp sendmail ?
Also try this
#mail wkst1@"yourservername".gsmomc3

can you send mails now?.

regards,
U.SivaKumar