Media advisory: Domtar Corporation first quarter 2007 financial results

Montreal, May 17, 2007 – Domtar Corporation (NYSE/TSX: UFS) today announced that it will hold a conference call with financial analysts to present its first quarter 2007 financial results on Tuesday, May 22, 2007 at 11:00 A.M. (EDT). Financial analysts are invited to participate in the call by dialling 1-866-215-0058 (North America) or 1-416-915-9616 (International), while media and other interested individuals are invited to listen to the live broadcast on the Domtar corporate website at www.domtar.com. A replay will be available on the website or by dialling 1-866-245-6755 (North America) or 1-416-915-1035 (International) using access code: 534780# until June 22, 2007.

Domtar Corporation (NYSE/TSX: UFS) is the largest integrated producer of uncoated freesheet paper and one of the largest manufacturers of papergrade market pulp in North America. The Company designs, manufactures, markets and distributes a wide range of business, commercial printing, publication as well as technical and specialty papers with recognized brands such as First Choice®, Domtar Microprint®, Windsor Offset®, Cougar® as well as its full line of environmentally and socially responsible papers, Domtar EarthChoice®. Domtar owns and operates Domtar Distribution Group, an extensive network of strategically-located paper distribution facilities. Domtar also produces lumber and other specialty and industrial wood products. The Company employs nearly 14,000 people. To learn more, visit www.domtar.com

- (30) -