Sendmail keep asking NIS

Hello list,

I have sendmail 8.12.10 running on Solaris 9, and NIS server.
I'm trying sendmail to use MX records instead of SMART_HOST.
Masquerading the host works fine.
This the .mc file I have, pretty simply now:
=============================
.....
MASQUERADE_AS(`xxxxxxxx..com')dnl
MASQUERADE_DOMAIN(`.xxxxxx.com')dnl
FEATURE(`masquerade_entire_domain')dnl
FEATURE(`masquerade_envelope')dnl
MAILER(`local')dnl
MAILER(`smtp')dnl
=============================

And the /etc/nsswitch.conf entries:
=============================
passwd:     files nis
group:      files nis
hosts:      files dns nis
ipnodes:    files
networks:   nis files
protocols:  nis files
rpc:        nis files
ethers:     nis files
netmasks:   nis files
bootparams: nis files
publickey:  nis files
netgroup:   nis
automount:  files nis
aliases:    files nis
services:   files nis
sendmailvars:   files
printers:       user files nis
auth_attr:  files nis
prof_attr:  files nis
project:    files nis
====================

The problem I have here is that everytime I send an email out to the internet, still it goes via the smart_host instead of looking at the right MX record as it should do.

When I bring the NIS server down, it fails this way:
================================
Mar 14 06:18:21 foo sendmail[27640]: [ID 801593 mail.alert] k2EEILDf027640: Losing ./qfk2EEILDf027640: savemail panic
Mar 14 06:18:21 foo sendmail[27640]: [ID 801593 mail.info] k2EEILDe027640: from=root, size=68, class=0, nrcpts=1, msgid=<20060314141
8.k2EEILDe027640@foo.bar.com>, relay=root@localhost
Mar 14 06:18:21 foo sendmail[27640]: [ID 801593 mail.info] k2EEILDe027640: to=test@internet.com, ctladdr=root (0/1), delay=00:00:00,
 xdelay=00:00:00, mailer=relay, pri=30068, relay=[mailhost], dsn=5.1.2, stat=Host unknown (Name server: [mailhost]: host not found)
Mar 14 06:18:21 foo sendmail[27640]: [ID 801593 mail.info] k2EEILDe027640: k2EEILDf027640: DSN: Host unknown (Name server: [mailhost
]: host not found)
Mar 14 06:18:21 foo sendmail[27640]: [ID 801593 mail.info] k2EEILDf027640: to=root, delay=00:00:00, xdelay=00:00:00, mailer=relay, p
ri=31092, relay=[mailhost], dsn=5.1.2, stat=Host unknown (Name server: [mailhost]: host not found)
Mar 14 06:18:21 foo sendmail[27640]: [ID 801593 mail.info] k2EEILDf027640: k2EEILDg027640: return to sender: Host unknown (Name serv
er: [mailhost]: host not found)
Mar 14 06:18:21 foo sendmail[27640]: [ID 801593 mail.info] k2EEILDg027640: to=postmaster, delay=00:00:00, xdelay=00:00:00, mailer=re
lay, pri=32116, relay=[mailhost], dsn=5.1.2, stat=Host unknown (Name server: [mailhost]: host not found)
Mar 14 06:18:21 foo sendmail[27640]: [ID 801593 mail.alert] k2EEILDf027640: Losing ./qfk2EEILDf027640: savemail panic
Mar 14 06:18:21 foo sendmail[27640]: [ID 801593 mail.crit] k2EEILDf027640: SYSERR(root): savemail: cannot save rejected email anywhe
===========================

It keeps looking for the 'mailhost' defined on the NIS server, I want sendmail not to lookup NIS entries.

Any help will be very welcome.!!!

Thanks


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