N.M. Stat. § 35-9-3
Attachment; hearing; judgment.
A. If the defendant was personally served as provided in Section 35-9-2B NMSA
1978, or if he appears as provided in the civil summons, the magistrate shall proceed to
hear and determine the action on its merits as in other civil actions.
B. If the defendant was not personally served as provided in Section 35-9-2B NMSA
1978, but his personal property was seized under the attachment and he does not
appear as provided in the summons, the magistrate shall order the sheriff to notify the
defendant by newspaper publication or by posting in at least three of the most public
places in the county that his property has been attached and that, unless he appears
before the magistrate at a time and place mentioned in the notice, not less than twenty
days or more than ninety days from the date of the notice, judgment will be rendered
against him and his property sold to pay the debt. If the defendant appears when
notified as provided in this subsection, the magistrate shall proceed to hear and
determine the action on its merits as in other civil actions. If the defendant fails to
appear when notified as provided in this subsection, the magistrate shall enter a default
judgment against him in the action.