AW: sender rejected

[skipmorse at gmail.com]

On Apr 30, 2010 10:58am, Christian Tardif <christian.tardif at servinfo.ca>  
wrote:







> I actually followed the Wiki that is why I added these entries to the  
> virtual table as you described. And I do receive emails for both domains  
> correctly. The problem is that when I try to send an email using my  
> normal username and the domain that I added to the virtual table it is  
> rejected.





> Oh! I see. Someone may correct me, but I think you can't send an email
> from a domain which isn't in the list of accepted domains. And the
> creation of Domain Aliases doesn't set the somewhat fake domain as a
> list of accepted domains and therefore, mails from that domain are
> rejected. To my knowledge, this would lead to an open relay situation.



> What you may try is:



> 1) put this somewhere in the main.cf.template file:



> relay_domains = hash:/kolab/etc/postfix/relay_domains



> 2) Create the /kolab/etc/postfix/relay_domains file



> 3) Put this single line:



> domain2.com OK



> 4) Create the needed db file with the command:



> /kolab/sbin/postmap /kolab/etc/postfix/relay_domains



> 4) Reload the new config with:



> /kolab/sbin/kolabconf



> Then, postfix should allow you to relay the fake domain2.com domain.
> But you still won't be allowed, though, to authenticate with this
> domain2.com to send mail, since the domain doesn't really exist in the
> kolab config.



> --




> Christian...


Sounds like you probably know more about how this stuff works than I, but I  
was under the impression that, by default, the server will only ACCEPT mail  
with the TO being for any of the domains in the 'domains' section of the  
web-admin...

And, it would seem to be default that you can't authenticate as  
user1 at domain.com and send mail saying you're user2 at domain.com... But, I  
really don't know how it works to send mail as if it's from  
user1 at domain2.com...

We don't use that in our setup, I just have an alias for each user for  
domain2.com, maybe I don't need to have that?
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