AW: sender rejected

Carsten Burghardt carsten at
Fri Apr 30 22:55:19 CEST 2010

Zitat von Christian Tardif <christian.tardif at>:

>> 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.

I thought that the domain is in the list of accepted domains when I  
add it to the list of domains in the kolab webadmin?

> What you may try is:
> 1) put this somewhere in the file:
>         relay_domains = hash:/kolab/etc/postfix/relay_domains
> 2) Create the /kolab/etc/postfix/relay_domains file
> 3) Put this single line:
> 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 domain.  
> But you still won't be allowed, though, to authenticate with this  
> to send mail, since the domain doesn't really exist in  
> the kolab config.

What I do not understand is the following. My kolab server is  
responsible for my business domain as well as my private domain. So I  
need to send emails using email addresses from both domains through  
the same kolab server. The alias setting in the virtual file does not  
work as described. But when I explicitely add  
carsten at as an alias entry to my user (which has  
the email-address carsten at it works. Looking at  
the configuration it seems that both ways work through an alias  
configuration. But where is the difference?


More information about the users mailing list