Listed below are the NNTP status codes. Your webbots should use these codes to verify the reposes returned from news servers.

100 help text follows
199 debug output
200 server ready - posting allowed
201 server ready - no posting allowed
202 slave status noted
205 closing connection - goodbye!
211 group selected
215 list of newsgroups follows
220 article retrieved - head and body follow
221 article retrieved - head follows
222 article retrieved - body follows
223 article retrieved - request text separately
230 list of new articles by message-id follows
231 list of new newsgroups follows
235 article transferred ok
240 article posted ok
335 send article to be transferred. End with <CR-LF>.<CR-LF>
340 send article to be posted. End with <CR-LF>.<CR-LF>
400 service discontinued
411 no such news group
412 no newsgroup has been selected
420 no current article has been selected
421 no next article in this group
422 no previous article in this group
423 no such article number in this group
430 no such article found
435 article not wanted - do not send it
436 transfer failed - try again later
437 article rejected - do not try again
440 posting not allowed
441 posting failed
500 command not recognized
501 command syntax error
502 access restriction or permission denied
503 program fault - command not performed