Header Filters

Header Filters allows specific headers to be filtered out from being sent. This is primarily used for blocking spam and viruses.

Header Filters is disabled by default. From the pull-down menu select Enabled and then click the Save button to enable Header Filters. Once it is enabled, the option Block Content-Type: message/partial will be displayed.

Message/partial is a specific MIME type which allows a single object to be split in to different pieces and delivered in separate mail, to be reassembled at the recipient. Since each mail will have only a fraction of the original message, it is not possible to scan messages with this MIME type. These messages are normally malicious and you can block this particular MIME type by enabling the option below.