INN: Don't expire messages

[Eriberto <jemf@gabcmt.eb.mil.br>]

Hello,

I deleted one message. When I click over deleted message, the
Thunderbird says:

------------------------------------------------
Error!
newsgroup server responded:Bad article number
Perhaps the article has expired
<cljo0f$etq$1@news.intj> (1)
Click here to remove all expired articles
------------------------------------------------

However, when I clicked on "Click here to remove all expired articles",
other articles, which were not cancelled, were deleted. How to corret this?

Thanks!

Eriberto