I have gone through all the RFC documentation for the syntax of command LIST HEADERS
I have found something at https://www.rfc-editor.org/rfc/rfc3977#section-8.6 but it seems
to be incomplete.
There I got :
LIST HEADERS [MSGID|RANGE]
There is a RANGE parameter and MSGID parameter ,my query is that how to specify the RANGE with in command . Of course I have tried like
LIST HEADERS 20-120
for this server returning me 501 no such list available
not only for that range even for any ranges I am getting the same reply(even for different selected groups also).
Kindly anybody please let me know is there any problem in command syntax or in my understanding or problem with server ?. Am I specifying the range in correct manner and what about MSGID.