[racket-users] Want to Run this smtp Sender with net/smtp. Something went wrong. What can it be ?

[MHE]

#lang racket 

(require net/smtp)

(smtp-send-message  "s...@server.de"
                    "sen...@mailadress.de"
                    "recei...@mailadress.de"
                    "NEW MESSAGE SMTP !"
                    "HI , THIS IS THE MESSAGE !"
                    [#:port-no 25
                     #:auth-user  "sen...@mailadress.de"
                     #:auth-passwd  "123456"
                     #:tcp-connect
                     #:tls-encode                   
                     25])           


Hi ,
i want to run this code. This is the result :  Something i have made wrong ?

$ racket sendmail_1.rkt
sendmail_1.rkt:11:35: #%datum: keyword used as an expression
  in: #:port-no
  context...:
   standard-module-name-resolver
hans@mx1:~/Documents/Racket

WBR
MHE

                  

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