[kronolith] Notifications to external domain Attendees it is not send

[Vidal Carro García]

   Hi List:

   I have an Horde instalation with Kronolith 4.2.3, Imp 6.2.3 and Horde 5.2.3.

   When I create a new Event in Calendar and I put some attendees from  
external domains (gmail.com for instance) the iTip notification it is  
not send and "There was an error sending an event notification to  
user at gmail.com: Message could not be delivered- the address was not  
found, is unknown, or is not receining messages" error message is  
displayed.

   With a previous version 4.1.5 of Kronolith it was working.

   I have made a little debug and it is like when kronolith try to  
send the notification, the email server rejected it because it is not  
authenticated. Server said "relay it is not permitted".

   Are there any change in configuration that I need to adjust?

   Thanks in advance.



-- 
Vidal Carro García