Notifications by e-mail

[Carroll, Jim P [Contractor]]

What you're asking is to have Nagios be your Mail Transfer Agent (MTA).
That's not what Nagios was designed to do.

I've been following this thread, and I still don't understand why you can't
run sendmail on your Nagios server.  Is it a matter of corporate policy, ie,
"Sendmail is bad; do NOT run Sendmail anywhere," or is it a matter of
security, ie, you don't want any MTA listening to port 25 on your Nagios
server (also possibly the result of corporate policy), or are you merely in
over your head (some folks have serious difficulties setting up sendmail to
work properly)?

Here are some options, depending on what your particular situation is:

1) Due to corporate policy or personal opinion, it is felt that Sendmail as
an MTA isn't adequately secure.  Alternatively, corporate policy or personal
opinion is such that Sendmail is too much of a headache to configure.

   Options:

   a) If you're merely trying to avoid inbound (port 25) traffic,
      reconfigure Sendmail (as someone has already stated) to
      refuse all traffic, except for traffic originating from
      127.0.0.1.
   b) If it's simply a prejudice against Sendmail itself, replace
      it with another MTA, such as Qmail, Postfix, Exim, just to
      name a few.  If you want a dead simple MTA which can only
      send to a smarterhost, I would suggest you install
      nullmailer.
   c) Become a programmer's programmer; write your own MTA (and
      thus reinvent the wheel).  Guarantee yourself a role
      supporting your legacy work as you chase down bugs and
      security problems.

2) Due to corporate policy or personal opinion, no MTA of any kind is to be
permitted on the Nagios host.

   Options:

   a) Do without *any* notifications which depend on SMTP.
   b) Change corporate policy and/or personal opinion, then
      revisit option #1, above.

Best of luck.

jc


> -----Original Message-----
> From: Hugo Rebello [mailto:hugo.rebello at dhl.com]
> Sent: Wednesday, April 02, 2003 11:15 AM
> To: 'Nagios users list'
> Subject: RE: [Nagios-users] Notifications by e-mail
> 
> 
> When I start the sendmail service the notification is work, 
> but I can't start sendmail service in Nagios servers.
> Exist some options on the Nagios for use smtp server of 
> another machine ?
> I want to redirect the notification by email for another machine.
> 
> Thank you.
> 
> Hugo
> 
> -----Original Message-----
> From: Jose Orlando Muñoz Bravo (HP) [mailto:jmunoz at comcel.com.co]
> Sent: quarta-feira, 2 de abril de 2003 13:04
> To: Hugo Rebello; Nagios users list
> Subject: RE: [Nagios-users] Notifications by e-mail
> 
> 
> You can use any SMTP (25) you can test the nagios account to 
> manualy send a message from the prompt, if you can send out a 
> message nagios will send notifications.
> 
> # su - nagios
> nagios> mail user at domain.com
> 
> jomb 
> 
> -----Mensaje original-----
> De: Hugo Rebello [mailto:hugo.rebello at dhl.com]
> Enviado el: miércoles, 02 de abril de 2003 9:37
> Para: 'Nagios users list'
> Asunto: RE: [Nagios-users] Notifications by e-mail
> 
> 
> Can I to use other smtp server ?
> For instance, use the smtp server that is my E-mail Server 
> instead smtp
> server (sendmail) in Nagios Server ?
> 
> Hugo
> 
> -----Original Message-----
> From: nagios-users-admin at lists.sourceforge.net
> [mailto:nagios-users-admin at lists.sourceforge.net]On Behalf Of Rasmus
> Plewe
> Sent: quarta-feira, 2 de abril de 2003 11:17
> To: Nagios users list
> Subject: Re: [Nagios-users] Notifications by e-mail
> 
> 
> On Wed, Apr 02, 2003 at 09:56:37AM -0300, Hugo Rebello wrote:
> >
> > Anybody help me ? I use Nagios 1.0v.
> >
> > My problem is. When I stoped sendmail service I don't 
> receive notification
> > by e-mail. I really need of sendmail service started ?
> 
> When you disable the ability of your system to send mail, you will not
> receive any mail from this system. What exactly do you find surprising
> in this?
> 
> 
> Rasmus
> (Of course, sendmail as a program is not neccessary, but you need the
> functionality)
> 
> 
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