Re: How to ensure that either FROM or TO is local

2010-01-04 Thread Serge Fonville
Thx for the reply. > While it was intended, no doubt, to be very wrong, it failed. Lacking > a valid CIDR expression, that only matches the single IPv4 address of > 0.0.0.0, which, having special meaning in networking, is unroutable. > A setting of equivalent functionality is "mynetworks =". > > T

Re: How to ensure that either FROM or TO is local

2010-01-03 Thread /dev/rob0
On Sun, Jan 03, 2010 at 09:58:15PM +1100, Barney Desmond wrote: > > mynetworks = 0.0.0.0 > This is *definitely* very wrong! smtpd_recipient_restrictions will > allow ANY client in mynetworks to relay mail to any destination. I While it was intended, no doubt, to be very wrong, it failed. Lacking a

Re: How to ensure that either FROM or TO is local

2010-01-03 Thread Serge Fonville
Wietse, Thx for the reply > The policy server can reject mail from a remote network with a > local sender address. > > Isn't that what you want? > > As an added bonus, it can also reject mail from a local network > with a remote sender address. This can help to stop outbound spam > from zombie-in

Re: How to ensure that either FROM or TO is local

2010-01-03 Thread Wietse Venema
Serge Fonville: > >> I *think* the short, correct answer is to use a policy server: > >> http://www.postfix.org/SMTPD_POLICY_README.html > > I will look into those then > I read into http://www.postfix.org/SMTPD_POLICY_README.html, but I do > not see how I can use this to solve my problem. > Perhap

Re: How to ensure that either FROM or TO is local

2010-01-03 Thread Serge Fonville
>> I *think* the short, correct answer is to use a policy server: >> http://www.postfix.org/SMTPD_POLICY_README.html > I will look into those then I read into http://www.postfix.org/SMTPD_POLICY_README.html, but I do not see how I can use this to solve my problem. Perhaps I am missing something...

Re: How to ensure that either FROM or TO is local

2010-01-03 Thread Serge Fonville
Thx for the reply > Questions similar to yours come up fairly often, I'm not sure why > noone's jumped in yet with a rough solution that will do what you > want. What you've mentioned you want: > >> How do I ensure that my mail server can only send mails either to or >> from mydomains? > > I *thin

Re: How to ensure that either FROM or TO is local

2010-01-03 Thread Barney Desmond
Questions similar to yours come up fairly often, I'm not sure why noone's jumped in yet with a rough solution that will do what you want. What you've mentioned you want: > How do I ensure that my mail server can only send mails either to or > from mydomains? Consider that there are three situatio

Re: How to ensure that either FROM or TO is local

2010-01-02 Thread Serge Fonville
>>> Postfix, by default, only queues mail that is destined for that system >>> (mydestination or virtual settings), included in mynetworks, or listed >>> in relay_domains >>> This only changes if *you* tell Postfix not to. The config below does >>> not show any such weakness. >> Hmmm, so basically

Re: How to ensure that either FROM or TO is local

2009-12-30 Thread Serge Fonville
I was wondering... >>> smtpd_banner = Infracom Mail Server >>> >> Don't change this unless you have a really good reason. >> Some functionality can be lost by those connecting to you and the >> current line breaks the SMTP standard. > Ok, thx I'll revert this to the default then ;-) > >> There are

Re: How to ensure that either FROM or TO is local

2009-12-30 Thread Serge Fonville
Thx for the reply. >> postconf -n >> >> smtpd_banner = Infracom Mail Server >> > Don't change this unless you have a really good reason. > Some functionality can be lost by those connecting to you and the > current line breaks the SMTP standard. Ok, thx I'll revert this to the default then ;-) >

Re: How to ensure that either FROM or TO is local

2009-12-30 Thread Brian Evans - Postfix List
On 12/30/2009 1:45 PM, Brian Evans - Postfix List wrote: > This only changes if *you* tell Postfix not to. The config below does > not follow this. Should read: This only changes if *you* tell Postfix not to. The config below does not show any such weakness.

Re: How to ensure that either FROM or TO is local

2009-12-30 Thread Brian Evans - Postfix List
On 12/30/2009 11:21 AM, Serge Fonville wrote: > Hi, > > I'm trying to install a postfix server and everything seemed to work ok. > Until I tried to mail from a remote domain to a remote domain, but > from 'telnet localhost 25' > I understand (suspect) this works because 127.0.0.0/8 is in mynetworks

How to ensure that either FROM or TO is local

2009-12-30 Thread Serge Fonville
Hi, I'm trying to install a postfix server and everything seemed to work ok. Until I tried to mail from a remote domain to a remote domain, but from 'telnet localhost 25' I understand (suspect) this works because 127.0.0.0/8 is in mynetworks. How do I ensure that my mail server can only send mail