I am not able to send email only to my own domain with sendmail. I am having trouble determining if the problem is name resolution on the box in question, or if the email is getting stopped at the mail relay/spam appliance.

I would appreciate any insights into this problem.

Could it be the NAT at the firewall? I can get to the mail server on port 80.

Here are the details.

# /usr/lib/sendmail -d0.1 -bt < /dev/null
Version 8.13.8+Sun
Compiled with: DNSMAP LDAPMAP LOG MAP_REGEX MATCHGECOS MILTER MIME7TO8
MIME8TO7 NAMED_BIND NDBM NETINET NETINET6 NETUNIX NEWDB NIS
NISPLUS PIPELINING SCANF USERDB USE_LDAP_INIT XDEBUG

============ SYSTEM IDENTITY (after readcf) ============
(short domain name) $w = cochise
(canonical domain name) $j = cochise.lib.az.us
(subdomain name) $m = lib.az.us
(node name) $k = unicorn
========================================================

# uname -a
SunOS unicorn 5.9 Generic_112233-07 sun4u sparc SUNW,Sun-Blade-100

# cat /etc/hosts
127.0.0.1 localhost
192.168.1.10 cochise.lib.az.us Unicorn cochise loghost
216.161.172.12 barracuda.lib.az.us mail.lib.az.us mailhost

# cat /etc/resolv.conf
domain lib.az.us
nameserver 205.171.3.65
nameserver 205.171.2.65

# hostname
unicorn

# domainname
cochise.lib.az.us

--
lscritch