Solution
Please Install the Updated Packages.
Insight
A regression was discovered in fetchmail 6.3.12
The multiline SMTP error fix in release 6.3.12 caused fetchmail to lose message codes 400..599 and treat all of these as temporary error. This would cause messages to be left on the server even if softbounce was turned off. Reported by Thomas Jarosch.
This update provides fetchmail 6.3.13, which addresses this problem.
Affected
fetchmail on Mandriva Linux 2010.0,
Mandriva Linux 2010.0/X86_64