sending a message failed

[gfp]

Hi Gnus,

I wanted to reply to a mail and I got an error message:



What do I have to add to my gnus.el file
so that I can send messages from Gnus.

Thanks

Gottfried

Debugger entered--Lisp error: (error "Sending failed: 554 5.1.8 <g...@tuxedo.mail-host-ad...") error("Sending failed: %s" "554 5.1.8 <g...@tuxedo.mail-host-address-is-not-set...")

OpenPGP_0xD9E413C6C4BB32CE.asc
Description: OpenPGP public key

OpenPGP_signature.asc
Description: OpenPGP digital signature