When the sheriff is a party or related to either party, or interested in the suit, bill in equity, or other process, the writ or other process in such action may be served by the sheriff or deputy sheriff of any other county or by his own deputy; and the sheriff may serve writs or other process upon his own deputies, and the official bond of the sheriff’s deputies shall protect him, the same as in other cases where he is not a party, and the bond of the sheriff shall protect his deputies on whom he may serve process. But nothing in this section shall prevent a sheriff or his deputy from serving process or levying execution himself in any case in which he is plaintiff by virtue of a receiptor given to him.