atom feed5 messages in net.sourceforge.lists.courier-usersRe: [courier-users] esmtproutes ignor...
FromSent OnAttachments
Lucio CruscaJun 29, 2012 2:53 am 
Sam VarshavchikJun 29, 2012 3:46 am 
Lucio CruscaJun 29, 2012 8:01 am 
Aidas KasparasJun 29, 2012 8:21 am 
Sam VarshavchikJul 1, 2012 5:31 am 
Subject:Re: [courier-users] esmtproutes ignored while receiving
From:Sam Varshavchik (
Date:Jul 1, 2012 5:31:13 am

Lucio Crusca writes:

Would it be easy to patch courier myself in order to check esmtproutes for incoming mail or make it do something equivalent? I do have C and C++ skills, but the question is: how many lines of code would be involved in such a patch approx?

For incoming mail, the check is that the domain in the return address is valid. Either it is valid, or it is not valid. esmtproutes supplies the default domain-based destination when sending mail (if the domain is found its MX records are not even looked up).

You can already set any environment variable, including BOFHCHECKDNS, based on the connecting IP address. If all you need to do is disable return address checking for connections from fixed IP addresses, just set BOFHCHECKDNS in smtpaccess.

------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats.