Solved

Sendmail outgoing only?

Posted on 2008-06-09
3
2,398 Views
Last Modified: 2013-12-21
Hi there gurus:

I have a solaris 10 server that doesn't have sendmail enabled as a service - when I installed i understood sendmail to have issues w/ security, so I made sure it's off (if it's even installed, dunno if solaris 10 by default includes it).

My problem is: I now need to be able to send stuff (like alerts, etc) from this solaris box to our MS exchange email server. The Solaris box doesn't need to listen for incoming email as we don't use those capabilities. So basically, all the solaris box needs to do is relay email originating on the box  to an exchange email server.  I would take sendmail alternatives, as long as they don't hose my system. It's a production environment and wouldn't want to take chances.

0
Comment
Question by:sdcox
3 Comments
 
LVL 16

Accepted Solution

by:
Hanno Schröder earned 250 total points
ID: 21749328
a) sendmail is part of Solaris 10 software
b) You don't have to enable sendmail to send mails. It is required
     to stay up and running (as a service) if you want your server
     receive mails, act as a mailserver
     If you have some mailserver, you may use that one instead to
     distribute system messages.
c) sendmail is pretty secure -- but can get very busy it it receives
    a lot of mails and you must make sure to configure it correctly
    to avoid receiving unwanted messages. Not to mention fighting
    SPAM and the like ...
d) To use the Solaris system for sending mails only, the configuration
    file /etc/mail/submit.cf is being used.
    Usually, you don't need to tweak anything in this file.
    The only thing: Your system will have to find your "real" mailserver
    (the exchange box in your case). If you have a host with name
    "mailserver" in DNS or local /etc/hosts (aka. /etc/inet/hosts) this
    server will be used and you don't have to change anything on
    submit.cf.
    An DNS alias "mailserver" works fine.
   If you cannot change DNS entries, simply add your mailserver's IP
   address with the name "mailserver" in /etc/hosts
0
 
LVL 21

Assisted Solution

by:robocat
robocat earned 250 total points
ID: 21749630

In Solaris 10, you can configure sendmail to accept e-mails only from the local system:

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

(if you disabled sendmail, you need to enable it first)


0
 

Author Closing Comment

by:sdcox
ID: 31465496
Ya'll were both really helpful. Thanks so much!!
0

Featured Post

Swamped with email signature updates?

Have you been given a load of changes to make to your users’ email signatures? Having to manually implement multiple signatures for every department? Let Exclaimer save you from being swamped with email signature updates!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

This short article will present "How to import ICS Calendar onto Office 365 Calendar". I was searching for free (or not free) tools to convert ICS to CSV without success. The only tools I found & working well were online tools...this was too hard to…
Workplace bullying has increased with the use of email and social media. Retain evidence of this with email archiving to protect your employees.
In this video we show how to create an Accepted Domain in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Mail Flow >> Ac…
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…

932 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now