On Wed 08 Oct 2014 at 13:00:46 -0400, Jerry Stuckle wrote: > On 10/8/2014 7:55 AM, Brian wrote: > > > > By definition an MTA will transport mail. It will do this for whatever > > talks nicely to it (telnet or netcat would do). Exim has no idea whether > > it is communicating with an MUA or an MTA and doesn't care. In fact, it > > will happily listen on ports 25 and 587 at the same time. > > > > Mail submitted on either of these ports can require authentication or be > > restricted to being allowed only from designated networks, such as a LAN. > > Neither of these mechanisms is known to lead to an inherent insecurity. > > Yes, I know all of that, Brian. But you missed the entire meaning of > the word "smarthost" as it applies to MTAs.
Nope. A smarthost *is* an MTA. My ISP has one; I have one; both talk to netcat in fluent SMTP. > And yes, there are many possible insecurities in an MTA configuration. Indeed. Just as there are many ways to get run over crossing a busy road. The trick is to avoid it happening. > Does the term "open relay" mean anything? I thought you knew what one is. Please see my other posts in this thread. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: https://lists.debian.org/[email protected]
