I mean using as incoming/outgoing server "news.gmane.org:119" but no
browser needed (although posting via http is also available), you can
use any news client (i.e., Thunderbird), create a new "News" account
and configure Gmane as news server (with the above mentioned host name
and port), choose the group you want to follow and get/post messages as
usual :-)
Yes, I have TB set up that way. But I see that in the header that you
sent the message from gmail, so how did you address it, not to
debian-user@lists.debian.org, but to Gmane's NNTP server, how?