Re: [courier-users] Prevent fake sender for mail not leaving server

2014-09-30 Thread Bernd Prünster
On 30/09/14 02:25, Sam Varshavchik wrote: It should be possible to write a custom mail filter module that does this, but there is no built-in switch to readily do this. Thanks for the prompt reply! You might want to investigate a split-DNS configuration. I will look into it, thank you. Best

[courier-users] Prevent fake sender for mail not leaving server

2014-09-29 Thread Bernd Prünster
Hello, I am a bit puzzled by a shortcoming of my courier configuration. My configuration: Auth is not required (obviously to allow for receiving mail from other servers), but unauthenticated relaying is disabled (to prevent spammers from using my server). Authentication itself is only possible

Re: [courier-users] DSN Problem

2013-08-21 Thread Bernd Prünster
Sam Varshavchik mr...@courier-mta.com wrote: Let me guess: you're trying to bounce something from a locally-executed mail delivery script, after a message is accepted for delivery. Actually the scenario is rather simple: John Doe sends me an email (from his Gmail account) using his locally

Re: [courier-users] DSN Problem

2013-08-21 Thread Bernd Prünster
On 21/08/13 12:52, Sam Varshavchik wrote: They typically don't handle it, until someone uses them as a mailbomb proxy source, they get blacklisted, and then they'll figure out what they want to do. So basically it is by design that Courier does not issue DSNs to external email addresses? Can I

[courier-users] DSN Problem

2013-08-20 Thread Bernd Prünster
Hello, I need assistance fixing a (configuration?) problem: courier does not send Delivery Status Notifications. I am willing to pastebin logs (I am not smart enough to use the SMTP dialog for debugging), DNS records, config files, wireshark captures, etc. as needed. best regards, Bernd PS: