email delivery problems (virtual domain - external domain)

[gerald_FS]

Help I can not send e-mails to all the people in the same domain !!

E-Pickup is fetchmail - no problems!

To post I have set up a virtual domain (online.de), this is identical to my external mail domain in my case online.de), the smarthost values for delivery through the SMTP server of my provider I have set up accordingly.

As far as everything works except for one thing - I can not send emails to other recipients in the same domain.

Under SOGO get the message invalid e-mail address from the smartphone user unknown in virtual mailbox table.

Is there the possibility to say anything that is not set up locally will be forwarded via the smart host?

In Verson 3.2 this configuration in the form has wonderful does not work on 4.0 unfortunately.

LG
Gerald

This question is also provided in part by the German forum! - So far, unfortunately, there was no answer ...

[gerald_FS]

Does everyone here own email domain?
Or is my so unusual?

How is one to best configure its mail server?

many greetings
Gerald