How to modify or disable the rule Long header. Host sends emails facebookmail.com incompatible with RFC-822 and the server blocks it. Postmaster receives an email with the content: Trapped excessively long header: Subject: =?UTF-8?B?SmVyb21lIEphY2tzb24g?= =?UTF-8?B?KHpuYWpvbW/Fm8SHIHogdcW8?= =?UTF-8?B?eXRrb3duaWtpZW0gQW5p?= =?UTF-8?B?dGEgS3dpZWNpZcWEKSBzaw==?= =?UTF-8?B?b21lbnRvd2HFgiB6ZGrEmWM=?= =?UTF-8?B?aWUgdcW8eXRrb3duaWthIA==?= =?UTF-8?B?QW5pdGEgS3dpZS4uLg==?= STATUS: Header truncated. sorry for my english (translate)
