Unsolicited Electronic Messages Ordinance Part 4 4-8 Section 24 Cap. 593 or any other person to identify, locate or respond to the person who initiated the transmission of the message. (3) For the purposes of subsection (1) and in relation to the sending of a commercial electronic message from an electronic address that is a telephone number or facsimile number (the sending number), the person initiating the transmission of such a message shall not be treated as having materially falsified header information by reason only that he has performed any operation or issued any instruction in connection with the sending of the message for the purpose of, or that has the effect of, concealing or withholding from the called party the calling line identification information of the sending number. (4) In this section— calling line identification information (來電線路識別資料) has the same meaning as in section 13(2) (commercial electronic messages must not be sent with calling line identification information concealed ); header information (標頭資料) means the information attached to a commercial electronic message by a telecommunications device, service or network for the purpose of identifying, or purporting to identify, the person sending the message or the source, routing or destination of the message, and— (a) in relation to a commercial electronic mail message, includes, but is not limited to, the originating domain name, Internet protocol address and electronic mail address, but excludes the content in the SMTP data portion; and (b) in relation to any other form of commercial electronic message, includes, but is not limited to, the electronic address from which the message originates; Last updated date 2.8.2012