Hello All,
Configure an Content filter which detects message language like japanese, chinese, korean etc. However i have observed legitimate english content language mails are also getting quarantine. Upon further investigation there some wording in my message header i.e found AsyncOS supports double-byte character sets. Based on email character encodings, a content type filter can be utilized.
https://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/118184-configure-esa-00.html
Need to know on message header from where such content type got attach. Is it attach by ESA or Outlook/google whichever will be
Content-Type: multipart/mixed
Content-Type: text/plain;charset=iso-2022-jp
