CentOS - Jun 2010 - Disable sendmail and configure mailx to use an external Postfix server?

Is there anyway I can disable sendmail on my various machines and configure
mailx on them to utilize my Postfix SMTP server?

Thanks,

Dan

On 15/06/10 12:50, Dan Burkland wrote:
> Is there anyway I can disable sendmail on my various machines and
> configure mailx on them to utilize my Postfix SMTP server?
ssmtp may do what you want

Kal

Am 15.06.2010 04:50, schrieb Dan Burkland:
> Is there anyway I can disable sendmail on my various machines and configure
mailx on them to utilize my Postfix SMTP server?
> 
> Thanks,
> 
> Dan
Install "ssmtp" from EPEL and run `alternatives --config mta' to
change
from sendmail to ssmtp. That procedure will set a proper symlink for the
sendmail command execution, which is required when you submit mails by
using mail(x) command. `chkconfig sendmail off' will switch off the
sendmail service.

In /etc/ssmtp/ssmtp.conf configure your relay host parameters.

Alexander

Dan Burkland a ?crit :
> Is there anyway I can disable sendmail on my various machines and configure
mailx on them to utilize my Postfix SMTP server?
CentOS contains an utility to do just that.

# yum install postfix system-switch-mail

# system-switch-mail

--> replace Sendmail by Postfix

That's it.

Cheers,

Niki

Dan Burkland wrote:
> Is there anyway I can disable sendmail on my various machines and configure
mailx on them to utilize my Postfix SMTP server?
> 
You might, but I'd leave sendmail in its default configuration of only
accepting
   connections from localhost because a lot of other programs expect to be able 
to use it to send mail and it will queue and retry if it can't deliver 
immediately.  Just edit sendmail.mc and point SMART_HOST to the server that you 
want to use as a relay.

-- 
   Les Mikesell
    lesmikesell at gmail.com

Dan Burkland wrote:
> Is there anyway I can disable sendmail on my various machines and configure
mailx on them to utilize my Postfix SMTP server?
leave sendmail there and in /etc/mail/sendmail.mc add the line:
FEATURE(`nullclient', `smtp.server.example.com')dnl

restart sendmail

nullclient will send all mail to the relay, no local queuing, no local headers.
smarthost will try to deliver locally(if it's a local account), and queue
locally.
smarthost is close, but nullclient might be what is wanted.

ref: Sendmail Cookbook, chapter 3.1, Passing All Mail to a Relay