Thunderbird/hotmail problem

Hello,
I have trouble sending mail from my hotmailaccount in Thunderbird. I use the extensions on this site http://webmail.mozdev.org/ . Everytime I send a mail I get a warning message from IMON about a BAT/generic virus. There are no extra details given, nor in the logfiles.
The file that's giving the problem is starting with hxxp://by110fd.bay110.hotmail.msn.com./.. when I send attachments I get an extra warning for the attachment.
Does anyone know how I can make it stop, because this way I can't send any attachment, only plain e-mail.
thanks

 

Hello,
if you get an alert, tick the "Copy to quarantine" check-box before you choose any of the actions available. Next, browse for the appropriate nqi and nqf files in the program files/eset/infected folder and send them to support[at]eset.com for further analysis.