Kool Aid Served Daily

I'm in the process of creating some gate and clones for an internal project. Part of the gate maintenance requires mail to be sent to a specific host such that a checkin kicks of some sanity checks. I've got a working example on another host. But I can't get mine to work.

First we need to make sure that sendmail is running on the target box:

> svcs -a | grep smtp
online         Jun_04   svc:/network/smtp:sendmail
> netstat -a | grep smtp
localhost.smtp             *.*                0      0 49152      0 LISTEN

Okay, it appears to be up. Can we confirm that from a remote host?

> telnet kanigix 25
Trying 192.168.2.XXX...
telnet: connect to address 192.168.2.XXX: Connection refused

> sudo nmap kanigix

Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2007-06-06 10:51 CDT
Interesting ports on kanigix.XXX (192.168.2.XXX):
Not shown: 1676 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
111/tcp  open  rpcbind
2049/tcp open  nfs
4045/tcp open  lockd
MAC Address: 00:03:47:B1:6E:45 (Intel)

Nmap finished: 1 IP address (1 host up) scanned in 45.244 seconds

Okay, internally it appears up and externally it appears down. Further, a google doesn't yield anything interesting. Time to check the man pages for sendmail:

     On an  unmodified  system,  access  to  sendmail  by  remote
     clients  is enabled and disabled through the service manage-
     ment facility (see smf(5)).  In particular, remote access is
     determined by the value of the local_only SMF property:

       svc:/network/smtp:sendmail/config/local_only = true


     A setting of true, as above, disallows remote access;  false
     allows remote access. The default value is true.

     The following example shows the  sequence  of  SMF  commands
     used to enable sendmail to allow access to remote systems:

       # svccfg -s svc:/network/smtp:sendmail setprop config/local_only = false
       # svcadm refresh svc:/network/smtp:sendmail

Okay, what is the current value of the property?

> svccfg -s svc:/network/smtp:sendmail listprop config/local_only
config/local_only  boolean  true

Time to correct it:

> sudo svccfg -s svc:/network/smtp:sendmail setprop config/local_only = false
> sudo svcadm refresh svc:/network/smtp:sendmail

And what do we see now? Nothing changed. Try this:

> sudo svcadm restart svc:/network/smtp:sendmail

And we see some changes start:

>  netstat -a | grep smtp
      *.smtp               *.*                0      0 49152      0 LISTEN
      *.smtp               *.*                0      0 49152      0 LISTEN
      *.smtp                            *.*                             0      0 49152      0 LISTEN   

And from the client:

> telnet kanigix 25
Trying 192.168.2.XXX...
Connected to kanigix.
Escape character is '^]'.
220 kanigix.XXX ESMTP Sendmail 8.14.1+Sun/8.14.1; Wed, 6 Jun 2007 11:12:54 -0500 (CDT)
^]
telnet> q
Connection closed.

Okay, that wasn't intuitive. And neither was the control for remote access being buried in a property. I will say that the man page was helpful.