Filed a_from of table Article

[rovell74]

Hi
i've migrate from OTRS 4 to OTRS 5. Now when i open a ticket with an email the field "a_from" of the table article is set with the email of the customer.
How can i set it to the sender of the mail?

Thanks for your help

[jojo]

the field always contains the sender (which normally is the customer)