I want to set any mailreply having a @mycompany.com mailaddress as Type
email-internal, sendertype: agent. To do so, I declared a "Postmaster
Filter" matching the addresspattern and setting the headerfields:
X-OTRS-SenderType: agent
X-OTRS-ArticleType:  email-internal

The result is: mail is handled as email-internal, syslog says Sendertype
is set to agent but in the ticket history the article is shown as
customer-article. What is wrong?