Re: rblsmtpd with relay-ctrl

[Matt Simpson <net-qmlist@jmatt.net>]

At 7:00 PM 3/2/07, Fabio Busatto wrote:
> if you're using SMTP-AUTH (the right
> way to do smtp authentication in my opinion) you can patch your qmail with
> the qmail-dnsbl (http://qmail-dnsbl.sourceforge.net/), that performs dnsbl
> checks only if the user was not successfully authenticated.
Or you can run another qmail-smtpd for authenticated users only, on 
another port (preferably 587, since that's the standard), and not use 
RBL on that port.  In my opinion, that's the right way to do smtp 
authentication.  In today's world, it's becoming more likely that 
your clients will be trying to connect through some ISP that is 
blocking outbound port 25 to anything except their own servers. 
Whether that's good or bad is still widely debated, but the reality 
is that it happens.  Port 587 is your friend.