Mail System Error - Returned Mail Virus Detected

[postmaster@taoiseach.gov.ie]

The Virus Scenarios/Incoming/Inbound - MSW Script List/FILTER: The operation completed successfully.
Scenarios/Incoming/Inbound - File Detector/AV: A matching file named 'instruction.zip' has been detected.
Scenarios/Incoming/Inbound - File Detector/AV: A matching file named 'instruction.exe' has been detected.
Scenarios/Incoming/Inbound - Virus/AV: Threat 'W32/MyDoom-O' detected by 'Sophos AV Interface for MIMEsweeper'.

 has been detected in the mail sent from kf-web-archive@ths.kth.se to socialpartnership@taoiseach.gov.ie
 and has not been delivered to socialpartnership@taoiseach.gov.ie