The defendant's appearance, through counsel, by service of an answer asserting counterclaims but no jurisdictional defense, waived his subsequently asserted defense of lack of personal jurisdiction. His motion to vacate the order of foreclosure and sale must be denied insofar as it is based on lack of personal jurisdiction, pursuant to CPLR 5015(a)(4). Because the defendant voluntarily submitted to the court's jurisdiction, the alleged inaccuracies in the filed affidavits of service do not support vacatur of the prior summary judgment motion, pursuant to 5015(a)(3).
Wells Fargo Bank, N.A. v. Sewer, NY Slip Op 05170 (1st Dep't September 29, 2020)
Here is the decision.