i make some screenshots so that my question are better specified, i replaced personal informations with example text.
in the above picture you see accounts that i configured on the webclient
zimbra_web_accounts.jpg
these accounts are also displayed when i send mails over the webclient
zimbra_web_sending-account.jpg
on the desktop-client there are only the persona in the account options
zimbra_client_accounts.jpg
on the sending form in the desktop-client are also only these are shown
zimbra_client_sending-account.jpg
so what can i do that i can send as in the webclient? i send mails over my isp and for the pop-accounts over these smtp-server with postfix rules
gregor