On 20 Nov 2006 at 15:07, Eric B. wrote: > Hi, > > I'm a bit confused as to the SMTP Auth Destination port. According to the > description, the main use is to allow authenticated connections and > therefore inject the mail at the SPF-correct point in the network (eg: port > 587 of the MTA). > > So if I understand this right, the second listen port should be set to port > 587 (to follow RFC), and the SMTP Auth Destination set to <MTA Address>:587 > (or in the case of localhost, some new port for 587 that the MTA is > listening on).
Yes, but depends on your MTA config. 587 is just the usual mail submission port. > Basically, if I am still following this, the listenPort2 / smtpAuthServer > pair are pretty much the same as the listenPort / smtpDestination pair. Or > is there any additional processing by ASSP that occurs if a client connects > on listenPort2 instead of listenPort? None by ASSP. The MTA may do header validation, add 'Date:' or other stuff. > Is there an advantage of connecting to port 587 instead of the standard port > 25? Or is this just a new spec to try and limit traffic on port 25 to be > solely server-to-server comms and while port 587 becomes a client-to-server > communication port? Do you mean port 587 on ASSP? It is useful if a roaming user is behind a firewall that blocks or reroutes port 25 traffic. > Do MTA's typically support TLS on port 587? If they support it on :25, it's likely to be on any other submission port. However, ASSP suppresses the TLS advertisement from the MTA, so a client should never try to use it. Paul ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Assp-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/assp-user
