§ 211. Pleadings, proof and motions. A matrimonial action shall be
commenced by the filing of a summons with the notice designated in
section two hundred thirty-two of this chapter, or a summons and
verified complaint as provided in section three hundred four of the
civil practice law and rules. A final judgment shall be entered by
default for want of appearance or pleading, or by consent, only upon
competent oral proof or upon written proof that may be considered on a
motion for summary judgment. Where a complaint or counterclaim in an
action for divorce or separation charges adultery, the answer or reply
thereto may be made without verifying it, except that an answer
containing a counterclaim must be verified as to that counterclaim. All
other pleadings in a matrimonial action shall be verified.