ALERT - Virus Detected in email - RE: Mail System Error - Returned Mail

[Mailsweeper-Admin at towergate.co.uk]

The email that you sent to inboundfailures at towergate.co.uk has failed security scanning by the Towergate email gateway on rule Hold Messages Containing Executables: ItemLength.GE.$I0.
Drop Messages Containing a Virus: Threat 'Email-Worm.Win32.Mydoom.m' detected by 'Kaspersky Anti-Virus'.

 and has been deleted. Please Virus Scan your message before resending.

Thank you
Towergate IT Security