Hi Gordon > > Then put the FQDN of your router in "me". Don't forget to run > "makealiases" after changing the "me" file.
Yes that was probably where the problem was. Our ISP has set mail.trinity.asn.au in our DNS record, so I should have set the "me" file to that rather than letting the internal name of the machine be used. > We >> have been running Courier-MTA for 2 and a half years without any >> apparent connection problems, certainly nothing visibly associated >> with DNS resolution. > > Do you read all of your "postmaster" mail? Indeed I do. That's why I was surprised to discover that we had a misconfiguration. I thought that Courier was running flawlessly. Certainly no-one has missed any emails and the only DSN problems we see are occasional "User Unknown" where Courier sends a vacation reply in response to spam. > > >> Is it that Courier is sending DSNs with the full machine hostname that >> is causing this? > > It's related. Courier uses the hostname of the machine on which it runs > for certain operations, and the dialback module of pythonfilter does, too. > > I was wrong about the DSN bit, though. Courier actually uses no return > address when sending DSNs. You can do that in dialback, too, if your > python isn't super old. Just modify the dialback.py file and set: > postmasterAddr = '' > > You might run in to a minor problem: some sites don't accept mail from > null senders. Those sites are in violation of RFC requirements, so you > can decide for yourself whether or not you want to accept mail from them. > Thanks for all this. Dialback seems to be OK for now but I'll monitor it for a while. We appreciate the work you have done on pythonfilter. The greylisting neatly killed almost all our spam so I could remove a heap of dubious custom rules in spamassassin. cheers, Ken ------------------------------------------------------------------------- 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 _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
