# Postfix MIME header checks for Limristem eMail
# Blocks dangerous executable attachment extensions commonly used for ransomware, trojans, and malware.
/^[[:space:]]*content-(type|disposition):.*(file)?name[[:space:]]*=[[:space:]]*"?([^;"]+\.(bat|cmd|cpl|dll|exe|hta|iso|img|jar|js|jse|lnk|msc|msi|msp|mst|pif|ps1|reg|scr|sct|vbe|vbs|wsf|wsh))([[:space:]]*"|;|$)/i REJECT Executable file attachments are not allowed for security reasons: $3
