Blat option -f not working

"[email protected] [blat]" <[email protected]>
Newsgroups gmane.mail.blat
Message-ID <[email protected]> 
Hello, i am using Blat 323 with Stunnel to connect to securesmtp.t-online.de on port 465. Sending of emails is working just fine but i can´t change the sender adress in the email. it is alwas giving me the email i use to log into the smtp server.
 

 Seems like the -f option is not working somehow
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.