Man pages matching name passwd.nntp in section 5:

passwd.nntp.5.en	debian 10 / inn
passwd.nntp.5.en	debian 10 / inn2-inews
passwd.nntp.5.en	debian 11 / inn
passwd.nntp.5.en	debian 11 / inn2-inews
passwd.nntp.5.en	debian 12 / inn
passwd.nntp.5.en	debian 12 / inn2-inews