DKIM 是否也签署附件，或仅签署 header 字段和 body？
Does DKIM also sign the attachments, or only header fields and body?
DKIM是否也对附件进行签名？还是只有 header 字段和 body？如果它对附件进行签名，我可以在 Thunderbird 中以某种方式配置它吗？
请看section 3.7 of the DKIM RFC:
With the exception of the canonicalization procedure described in
Section 3.4, the DKIM signing process treats the body of messages as
simply a string of octets. DKIM messages MAY be either in plain-text
or in MIME format; no special treatment is afforded to MIME content.
Message attachments in MIME format MUST be included in the content
that is signed.
DKIM是否也对附件进行签名？还是只有 header 字段和 body？如果它对附件进行签名，我可以在 Thunderbird 中以某种方式配置它吗？
请看section 3.7 of the DKIM RFC:
With the exception of the canonicalization procedure described in Section 3.4, the DKIM signing process treats the body of messages as simply a string of octets. DKIM messages MAY be either in plain-text or in MIME format; no special treatment is afforded to MIME content. Message attachments in MIME format MUST be included in the content that is signed.