CentOS - Oct 2018 - Setting up sendmail to mail system messages on CentOS 6 and 7

On 2018/10/27 21:00, centos-request at centos.org wrote:
> I've previously configured sendmail to send system messages on selected
> servers running CentOS 6. Usually they just kinda' work out of the box.
No
> problems to speak of.
> 
> However most of my CentOS 7-servers are rather flakey when it comes to
> sendmail. Most of the time they just won't send mails for whatever
reason.
> Further, most of the time I can get it working, it's usually about a
> firewall rule not set, the firewall not having been reloaded or some simple
> such.
Another thing to try would be Postfix. I've always found that very easy to
use and also requires almost no configuration:
https://www.server-world.info/en/note?os=CentOS_7&p=mail&f=1 (on the
same site, a lot of very useful CentOS7 info)

Usually for local servers, all I do is:
1. Add root alias in /etc/aliases
2. Run 'newaliases'
3. Send test mail:
echo "test from `hostname`" | mail -s 'mail test' me at
address

That's all.

ian

On Mon, Oct 29, 2018 at 10:38:10AM +0900, ?????????
wrote:
> On 2018/10/27 21:00, centos-request at centos.org wrote:
> >I've previously configured sendmail to send system messages on
selected
> >servers running CentOS 6. Usually they just kinda' work out of the
box. No
> >problems to speak of.
> >
> >However most of my CentOS 7-servers are rather flakey when it comes to
> >sendmail. Most of the time they just won't send mails for whatever
reason.
> >Further, most of the time I can get it working, it's usually about
a
> >firewall rule not set, the firewall not having been reloaded or some
simple
> >such.
> 
> Another thing to try would be Postfix. I've always found that very easy
to use and also requires almost no configuration:
> https://www.server-world.info/en/note?os=CentOS_7&p=mail&f=1 (on
the same site, a lot of very useful CentOS7 info)
> 
> Usually for local servers, all I do is:
> 1. Add root alias in /etc/aliases
> 2. Run 'newaliases'
> 3. Send test mail:
> echo "test from `hostname`" | mail -s 'mail test' me at
address
> 
> That's all.
> 
> ian
Probably not helpful, but I run a home mailserver, always used sendmail.
Spent 15 years slowly accumulating a functioning sendmail.mc. When I
bring up a new system I just carry over the sendmail.mc, compile it,
restart sendmail and voila. EL7 was no different than EL6 in that regard.

Fred

-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us
-----------------------------
                      The eyes of the Lord are everywhere, 
                    keeping watch on the wicked and the good.
----------------------------- Proverbs 15:3 (niv) -----------------------------

> -----Original Message-----
> From: CentOS <centos-bounces at centos.org> On Behalf Of Fred Smith
> Sent: den 29 oktober 2018 03:23
> To: centos at centos.org
> Subject: Re: [CentOS] Setting up sendmail to mail system messages on
> CentOS 6 and 7
> 
> On Mon, Oct 29, 2018 at 10:38:10AM +0900, ????????? wrote:
> > On 2018/10/27 21:00, centos-request at centos.org wrote:
> > >I've previously configured sendmail to send system messages on
selected
> > >servers running CentOS 6. Usually they just kinda' work out of
the box. No
> > >problems to speak of.
> > >
> > >However most of my CentOS 7-servers are rather flakey when it
comes to
> > >sendmail. Most of the time they just won't send mails for
whatever
> reason.
> > >Further, most of the time I can get it working, it's usually
about a
> > >firewall rule not set, the firewall not having been reloaded or
some simple
> > >such.
> >
> > Another thing to try would be Postfix. I've always found that very
easy to
> use and also requires almost no configuration:
> > https://www.server-world.info/en/note?os=CentOS_7&p=mail&f=1
(on
> the same site, a lot of very useful CentOS7 info)
> >
> > Usually for local servers, all I do is:
> > 1. Add root alias in /etc/aliases
> > 2. Run 'newaliases'
> > 3. Send test mail:
> > echo "test from `hostname`" | mail -s 'mail test' me
at address
> >
> > That's all.
> >
> > ian
> 
> Probably not helpful, but I run a home mailserver, always used sendmail.
> Spent 15 years slowly accumulating a functioning sendmail.mc. When I
> bring up a new system I just carry over the sendmail.mc, compile it,
> restart sendmail and voila. EL7 was no different than EL6 in that regard.
Thanks, that actually helps for starters. No difference then.

--
//Sorin