format not supported?

[Ewald Beekman]

I noticed some rar archives could not be processed with the following
error report:

    Report: Could not check ./h2IFZvpD027967/nbi.rar/NBI\Berkhout\hist.txt (format not supported)
Could not check ./h2IFZvpD027967/nbi.rar/NBI\Berkhout\spot4.hr3.bmp (format not supported)
Could not check ./h2IFZvpD027967/nbi.rar/NBI\Berkhout\spot4.nbi3.bmp (format not supported)
etc.

apparently MailScanner doesn't need an external unrar program, but when
i downloaded one to test the archive myself i found that the
2.x version had a problem where the 3.1 version succeeded:

[super at sukke h2H8QbvF028301]# unrar t aliens.rar
UNRAR 3.10 freeware      Copyright (c) 1993-2002 Eugene Roshal

Testing archive aliens.rar

Testing     ALIENS.BMP                                                OK
All OK

[super at sukke h2H8QbvF028301]# unrar t aliens.rar
UNRAR 2.71 freeware      Copyright (c) 1993-2000 Eugene Roshal


Testing archive aliens.rar

Unknown method in ALIENS.BMP
No files to extract

Ewald...

--
Ewald Beekman, Security Engineer, Academic Medical Center,
dept. ADB/ICT Computer & Network Services, The Netherlands
## Your mind-mint is:
No discipline is ever requisite to force attendance upon lectures which are
really worth the attending.
                -- Adam Smith, "The Wealth of Nations"