…o. As such, MUAs and mail filtering software, such as that specified in Sieve [ RFC3028 ], will need to continue to accept and decode header fields that use the "encoded word" mechanism [ RFC2047 ] to accommodate non-ASCII characters in some header fields. While extensions to bot…

…ago. As such, MUAs and mail filtering software, such as that specified in Sieve RFC3028 ], will need to continue to accept and decode header fields that use the "encoded word" mechanism [ RFC2047 ] to accommodate non-ASCII characters in some header fields. While extensions to bot…

… that this option is left disabled unless there is good reason to do otherwise. rfc3028_strict: If enabled, Sieve will be strict (per RFC 3028 ) with regards to which headers are allowed to be used in address and envelope tests. This means that only those headers which are define…