Mimail.T belongs to the Mimail mass-mailing worm family. It was first found on April 20th, 2004.
This virus is still under analysis, but it seems to recycle code from earlier Mimail variants.
Please refer to Mimail.T description for details:
Disinfection & Removal
F-Secure Anti-Virus detects Mimail.V worm since the following
Detection Type: PC