'35 said:
is this a virus or trojan of some kind and if you don't do anything is
there
problems that will occur?
This is often due to interference from an antivirus program. The problems
it causes are worst if the undeletable message is in the Outbox, where it
can block all outgoing mail.
Download and install this fix, with Windows Mail not running:
http://support.microsoft.com/default.aspx/kb/941090
This is labelled as for mail stuck in the Outbox, but also works in
other folders. If you don't know whether to use the 32-bit version
or the 64-bit version, try the 32-bit version first. Certain common
antivirus programs, such as most of those from Norton or McAfee,
tend to cause such problems, although seldom immediately, so if
you have such a program, remember where to find the fix - you
are likely to need it again. A recent version of the Trend antivirus
program also causes assorted problems in Windows Mail.
