The licensing authority employee, authority representative, or other individual making such service shall prepare and sign a statement indicating upon whom, where and when such personal service was made. If possible, the licensee's or applicant's or other recipient's signed acknowledgment of notice may be obtained. Failure to make proof of service shall not affect the validity of service. Personal service shall be deemed to be made at the time that notice is handed to the recipient of service, left or posted, in accordance with this section.
N.M. Admin. Code § 8.370.2.38