Mississippi Code Title 21. Municipalities § 21-3-17

The mayor shall sign the commissions and appointments of all officers elected and appointed by the mayor and board of aldermen. Such commissions and appointments shall be attested by the clerk. The refusal, failure or neglect of the mayor to sign such commissions and appointments, or the refusal, failure or neglect of the clerk to attest same, shall not affect the validity of the acts of such officer when the minutes show the election or appointment was regularly had or made by the board. All bonds payable to the municipality shall be approved by the mayor and clerk.