Peters, J.
While incarcerated at a State correctional facility, petitioner mailed letters to two Justices of the First Department containing insolent and abusive language. Following a tier II hearing, he was found guilty of violating the prison disciplinary rule prohibiting inmates from engaging in harassment. The sole penalty was counseling and a reprimand. This CPLR article 78 proceeding was commenced to challenge, inter alia, the determination rendered.
The misbehavior report and letters received into evidence at the hearing, together with petitioner's admission that he authored the letters, provide substantial evidence of his guilt (see, e.g., Matter of Rodriguez v. Goord, 261 A.D.2d 740, 741, lv denied 93 N.Y.2d 818). Petitioner's assertion that the disciplinary rule governing harassment is unconstitutionally vague is unavailing. Disciplinary rule 107.11 ( 7 NYCRR 270.2 [B] [8] [ii]) states that "[i]nmates shall not harass employees or any other persons verbally or in writing. This includes, but is not limited to, using insolent, abusive, or obscene language or gestures, or writing or otherwise communicating messages of a personal nature to employees or volunteers." In our view, this language provides a person of ordinary intelligence with sufficient notice that sending threatening letters to judges will constitute conduct proscribed by the rule (see, Matter of Di Rose v. New York State Dept. of Correction, 228 A.D.2d 868; Matter of Hobson v. Coughlin, 137 A.D.2d 940). Petitioner's further contention that his letters constituted protected expression under the 1st Amendment of the US Constitution is also unpersuasive (see, Matter of Amaker v. Senkowski, 271 A.D.2d 772, lv denied 95 N.Y.2d 760).
As to the allegations first raised by petitioner in this proceeding that he was denied proper dental treatment, his failure to have first exhausted available administrative remedies precludes our review (see,Matter of Hakeem v. Wong, 223 A.D.2d 765, 765-766, lv denied 88 N.Y.2d 802).
Petitioner's remaining contentions have been examined and found to be either unpreserved or lacking in merit.
ADJUDGED that the determination is confirmed, without costs, and petition dismissed.