smf/svcs issues

 All, my sendmail (smtp) process dies at some point and I can't get it to
restart using the svcadm command. I have disabled/cleared/refreshed and
nothing seems to work. If I run the script manually
(/lib/svc/method/smtp-sendmail) it works just fine. The Reason in the last bit
of output is set to unknown. Below is some data:

# svcs -a | grep mail
online         10:56:45 svc:/network/sendmail-client:default
offline        10:55:26 svc:/network/smtp:sendmail

# svcs -l svc:/network/smtp:sendmail
fmri         svc:/network/smtp:sendmail
name         sendmail SMTP mail transfer agent
enabled      true
state        offline
next_state   none
state_time   Fri Apr 20 10:55:26 2012
restarter    svc:/system/svc/restarter:default
dependency   require_all/refresh file:/etc/mail/sendmail.cf (online)
dependency   require_all/refresh file:/etc/nsswitch.conf (online)
dependency   optional_all/none svc:/system/filesystem/autofs (online)
dependency   require_all/none svc:/system/filesystem/local (online)
dependency   require_all/none svc:/network/service (online)
dependency   require_all/refresh svc:/milestone/name-services (online)
dependency   optional_all/refresh svc:/system/identity:domain (online)
dependency   optional_all/none svc:/system/system-log (online)

# svcs -d svc:/network/smtp:sendmail
STATE          STIME    FMRI
online         10:56:09 svc:/system/identity:domain
online         10:56:19 svc:/system/filesystem/local:default
online         10:56:32 svc:/network/service:default
online         10:56:32 svc:/milestone/name-services:default
online         10:56:42 svc:/system/filesystem/autofs:default
online         10:56:44 svc:/system/system-log:default

# svcs -xv svc:/network/smtp:sendmail
svc:/network/smtp:sendmail (sendmail SMTP mail transfer agent)
 State: offline since Fri Apr 20 10:55:26 2012
Reason: Unknown.
   See: http://sun.com/msg/SMF-8000-AR
   See: man -M /usr/share/man -s 1M sendmail
Impact: This service is not running.

#cat network-smtp.sendmail.log

[ Apr 16 18:22:53 Rereading configuration. ]
[ Apr 20 10:09:36 Disabled. ]
[ Apr 20 10:10:32 Enabled. ]
[ Apr 20 10:12:33 Disabled. ]
[ Apr 20 10:12:43 Enabled. ]
[ Apr 20 10:24:21 Disabled. ]
[ Apr 20 10:31:22 Enabled. ]
[ Apr 20 10:52:56 Disabled. ]