Kolab 3.1 postfix relay access denied

[Brady, Mike]

On 2014-03-18 09:19, Tomas Kucera wrote:
> Actually just found that even other (non primary) domains are not
> allowed to send emails.
> 
> I am getting this: The server response was: <DATA>: Data command
> rejected: Could not find envelope sender user user at example.org.
> 
> tom.+
> 
> ______________________________________________________________
>> Od: "Tomas Kucera" <tku at centrum.cz>
>> Komu: "Brady, Mike" <mike.brady at devnull.net.nz>, 
>> <users at lists.kolab.org>
>> Datum: 17.03.2014 21:13
>> Předmět: Re: Kolab 3.1 postfix relay access denied
>> 
>> Mike,
>> 
>> thanks a lot for the solution. It solved major part of it.
>> 
>> Now I can send emails from users that belong to the domains under 
>> Kolab's control.
>> 
>> Another thing ... how to enable the SMTP also for other users that 
>> know the credentials, such as:
>> sender is user at ilovekolab.com while ilovekolab.com is not under the 
>> governance of Kolab but it could use credentials of user at example.org 
>> to authenticate to the SMTP server.
>> 
>> Is that simply doable?
>> 
>> Thanks in advance!
>> 
>> Kind Regards,
>> Tom.
>> 
>> ______________________________________________________________
>>> Od: "Brady, Mike" <mike.brady at devnull.net.nz>
>>> Komu: <users at lists.kolab.org>
>>> Datum: 17.03.2014 20:39
>>> Předmět: Re: Kolab 3.1 postfix relay access denied
>>> 
>>> On 2014-03-18 07:56, Tomas Kucera wrote:
>>>> Hi there,
>>>> 
>>>> I would like to ask for a help. I am not at all proficient in 
>>>> postfix..
>>>> I got to a point where it seems like a lot of things work as 
>>>> expected..
>>>> The current thing I am fighting is the following:
>>>> 
>>>> - CentOS 6.5
>>>> - Kolab 3.1 (tried 3.2 but the multidomain setup just did not work)
>>>> - multidomain setup
>>>> - from Roundcube everything works fine
>>>> - from external client (in my case Mail on Mac) when sending an 
>>>> email
>>>> to a domain that is outside of the domains under control of Kolab /
>>>> postfix I get Relay access denied.
>>>> 
>>>> I suppose that it is correct with the default setting but I just
>>>> cannot figure out how to configure the postfix in a way that it will
>>>> accept authenticated users and will allow them to send the emails
>>>> everywhere.
>>>> 
>>>> I went through the documentation of postfix and tried some of the
>>>> options for smtpd_xxx_restrictions, but did not get it to work.
>>>> 
>>>> So, please, please, help me!!!
>>>> 
>>>> A bonus would be to give some hints on potential security threats.
>>>> 
>>>> Thanks in advance!
>>>> 
>>>> Kind Regards,
>>>> Tom.


Haven't had to do that myself, but maybe this will do what you need?

http://kolab.org/blog/grote/2013/12/20/using-external-email-addresses-kolab

Regards

Mike