[BlueOnyx:24500] Re: Postfix config

[Ernie]

Hi Michael,
that's great news.

I have been a sendmail fan for many years, but Postfix wins in these days of
botnet spam, so I have been gradually moving over to it. Not as easy as
editing sendmail.mc but that's the price we pay for better spam control.

Thanks again


- Ernie.


> Hi Ernie,
> 
> Earlier I wrote:
> > That way you could create your own /root/custom-postfix-confgen file and
> > could put all the "postconf -e" commands into it that you want to apply
> > to the Postfix configuration *after* the auto-configure has run. That
> > would allow you to override any Postfix setting and make it stick
> > through updates and other changes.
> 
> I just published YUM updates for 5210R that introduce this change to
> Postfix:
> 
> smtpd_sender_restrictions is set to either ...
> 
> postconf -e 'smtpd_sender_restrictions = permit_mynetworks,
> check_sender_access hash:/etc/postfix/access'
> 
> ... or ...
> 
> postconf -e 'smtpd_sender_restrictions = permit_mynetworks,
> reject_unknown_sender_domain, reject_non_fqdn_sender,
> reject_non_fqdn_hostname, reject_unknown_reverse_client_hostname,
> reject_unknown_client_hostname, check_sender_access
> hash:/etc/postfix/access'
> 
> ... depending if "Accept from unresolvable domains" is enabled or
> disabled in the GUI.
> 
> The second set of parameters is the new default. Means: We do strict
> checking.
> 
> Additionally a new script was added:
> 
> /usr/sausalito/bin/custom-postfix-confgen.sh
> 
> This script will never be changed during YUM updates and you can put
> into it your own "postconf -e" config changes to Postfix. These will be
> executed automatically on Postfix restarts *after* the GUI has finished
> its auto-configuration of Postfix.
> 
> Essentially /usr/sausalito/bin/custom-postfix-confgen.sh allows you to
> reconfigure Postfix entirely - if you wish. So use it with caution. An
> example is included in the script itself.
> 
> -- 
> With best regards
> 
> Michael Stauber
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